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Each domain has its set of acronyms that those in the know throw around.

It's often embarrassing to ask what an acronym means. And that's why some use them -- to show how

So to prepare for such warfare, for many years I've been adding acronyms to various Quizlet apps to help me memorize only those I've forgotten about.

I've also been maintaining a static list at:

https://wilsonmar.github.io/acronyms

Please let me know if I need to change or add an entry.

Here's my list so far:

#

2FA = Two-Factor Authentication (MFA)
3DES = Triple Digital Encryption Standard

A

class>A11Y = Accessibility (numeronym of 11 letters between a and y)

B

B2B = Business to Business (marketing)
B2C = Business to Consumer (marketing)
BANT = Budget + Authority + Need + Timeframe (framework for buyer readiness)
BAU = Business Administration Unit
BBS = BitBucket Server (self-managed edition of BitBucket source version manager from Atlassian)
BCDR = Business Continuity and Disaster Recovery
BCP = Business Continuity Plan
BDM = Business Decision Maker
BDR = Business Development Representative
BEC = Business Email Compromise (spoofing emails to impersonate your company???s supervisors or CEO or vendors)
BERT = Bidirectional Encoder Representations from Transformers (Google GenAI)
BGP = Border Gateway Protocol
BHAG = Big Hairy Audacious Goal
BIA = Business Impact Assessment
BIOS = Basic Input Output System
BKM = Best Known Method
BLE = Bluetooth Low Energy
BOM = Bill of Material
BPMN = Business Process Model Notation
BRB = Be Right Back (internet slang)
BRM = Business Requirements Management
BTP = Behavioral Threat Protection
BTW = By The Way
BU = Business Unit
BVA = Business Value Assessment
BYOIP = Bring Your Own IP address
BYOK = Bring Your Own Key

C

C&C = Command and Control
C2E = Commercial Cloud Enterprise
CA = Certificate Authority (issues cryptographic certificates)
CaC = Configuration as Code
CAF = Cloud Adoption Framework (multi-cloud)
CAGR = Compound Annual Growth Rate
CAI = Cloud Asset Inventory (Google)
CAIQ = Consensus Assessments Initiative Questionnaire
CAM = Corporate Account Manager (role)
CAP = Common Alerting Protocol (XEP-127)
CAP = Cybersecurity Assessment Plan (FISMA)
CAPEX = Capital Expenditures (impacts Asset Balance Statements and can be amortized over time)
CAPTCHA = Completely Automated Public Turing (test) to tell Computers and Humans Apart
CASB = Cloud Access Security Broker (enterprise management software to mediate cloud service access by users across all types of devices)
CBK = Common Body of Knowledge
CCB = Change Control Board (organization)
CCE = Critical Customer Escalation
CCM = Cloud Controls Matrix (from CSA)
CCM = Continuous Controls Monitoring
CCM = Customer Communications Management
CCP = Common Control Provider (per RMF)
CCP = Crisis Communication Plan
CCS = Complete Corresponding Source (code)
CCTV = Closed-circuit TeleVision
CDK = Cloud Development Kit (AWS)
CDM = Continuous Diagnostics and Mitigation
CDN = Content Delivery Network (Amazon)
CDPI = Control Data-Plane Interface (between SDN Datapath and Controller)
CEO = Chief Executive Officer
CfCT = Customizations for Control Tower Amazon
CD = Continuous Deployment (into Production for Productive use)
CE = Community Edition
CF = CloudFormation (AWS IaC)
CFAA = Computer Fraud & Abuse Act (of 1986)
CFT = Cloud Foundation Toolkit (Google Forseti Config Validator managed by Scorecard CLI utility)
CG = Customer Gateway
CI = Continuous Integration
CIAN = Customer Identity and Access Management
CIDR = Classless Inter-Domain Routing (networking)
CIEM = Cloud Infrastructure and Entitlement Management (invented by Gartner)
CIM = Common Information Model (Splunk)
CIP = Critical Infrastructure Protection (plan)
CIRP = Cyber Incident Response Plan
CIS = Center for Internet Security
CISA = Cybersecurity and Infrastructure Security Agency (US government organization)
CISO = Chief Information Security Officer
CKL = Compromised Key List
CKMS = Cryptographic Key Management System
CLI = Command Line Interface (used to run Linux shell scripts)
CMK = Customer-Managed Key (for encryption)
CMP = Cloud Management Platform (for easier use of multiple clouds)
CN = Common Name (a human-readable name of the subject in certificates)
CNAME = Canonical Name Record (DNS)
CNI = Container Network Interface (Kubernetes)
CMDB = Configuration Management Database (ITIL term for where all aspects of the system is defined)
CNSS = Committee on National Security Systems
COGS = Cost of Goods Sold (Financial Accounting)
COOP = Continuity of Operations (plan)
COSO = Committee of Sponsoring Organization
COTS = Commercial Off-The-Shelf (Software vs. custom-built)
CPA = Certified Public Accountant
CPIC = Capital Planning Investment Controls
CPS = Customer Profitability Score
CPU = Central Processing Unit
CRD = Custom Resource Definition (Extends Kubernetes API)
CRI = Container Runtime Interface (Kubernetes)
CRR = Cross-Region Replication
CRL = Certificate Revocation List
CRM = Customer Relationship Management
CRR = Cyber Resilience Review (defined by DHS)
CRT = Common Release Tooling (built on top of GitHub Actions CI/CD)
CS = Customer Success (organization)
CSA = Cloud Security Alliance
CSAF = Common Security Advisory Framework (defined by OASIS)
CSB = Cloud Service Broker
CSC = Cloud Service Customer
CSC = Critical Security Controls
CSE = Customer Success Engineer
CSF = Cyber Security Framework (NIST ISO 27018)
CSI = Container Storage Interface (Kubernetes)
CSM = Customer Success Manager
CSP = Cloud Service Provider
CSP = Cryptographic Service Provider
CSPM = Cloud Security Posture Management (Azure Defender, Palo Alto Prisma Cloud, Qualys CloudView, Trend Micro Cloud One Conformity)
CSQL = Customer Success Qualified Lead (HashiCorp internal term)
CSR = Certificate Signing Request
CSRF = Cross-Site Request Forgery
CTA = Call To Action
CTAP = Client To Authenticator Protocol
CTF = Cyber Threat Framework
CTI = Cyber Threat Intelligence
CTO = Chief Technology Officer
CTS = Consul-Terraform Sync (HashiCorp product)
CVE = Common Vulnerabilities and Exposures (identified through the US CISA database)
CVRF = Common Vulnerability Reporting Framework (defined by OASIS)
CVSS = Common Vulnerability Scoring System
CWE = Common Weakness Enumerations (known in programming source code)
CWPP = Cloud Workload Protection Platform (Microsoft, Palo Alto)

D

DaaS = Data as a Service
DA = Developer Advocate
DAC = Discretionary Access Control (for Security)
DAO = Decentralized Autonomous Organization
DART = Detection and Response Team (Microsoft)
DAX = DynamoDB Accelerator (Amazon)
DB = Database
DC = Data Center (in the context of Consul - a set of Consul nodes within a region)
DC = Domain Controller (Microsoft server that authenticates user identities and authorizes their access to resources)
DCAP = Data-Centric Audit Protection
DDD = Domain Driven Design
DDL = Data Definition Language (SQL databases)
DDoS = Distributed Denial of Service Attack
DDPM = Denoising Diffusion Probabilistic Models (Generative AI)
DEK = Data Encryption Key (Microsoft secret held to protect data stored in SQL servers)
DEI = Diversity + Equity + Inclusion
DES = Digital Encryption Standard (56 bits)
DEX = Decentralized Exchanges (Blockchain)
DFIR = Digital Forensics and Incident Response
DHCP = Dynamic Host Configuration Protocol (automatically assigns IP addresses to devices on a network)
DHS = Department of Homeland Security (US government organization)
DLP = Data Loss Prevention
DML = Data Modeling Language (SQL databases)
DMS = Database Migration Service (AWS)
DMZ = Demilitarized Zone
DNC = Do Not Connect
DNS = Domain Name Service (networking
DOD = Department of Defense (US government organization)
DODAF = Department of Defense Architecture Framework
DPIA = Data Protection Impact Assessment
DR = Disaster Recovery
DRI = Directly Responsible Individual (Coined by Apple for the person to make sure that a task is completed)
DRP = Disaster Recovery Plan (to transition from alternative business processes back to regular processes.)
DRPO = Defense Research & Development Organization
DRY = Don’t Repeat Yourself
DX = Developer Experience
DSC = Digital Signature Algorithm (algorithm for signatures)
DSL = Domain-Specific Language
DTC = Diagnostic Trouble Code
DTLS = Datagram Transport Layer Security
DUT = Device Under Test
DWaaS = Data Warehouse as a Service
DX = Developer eXperience

E

E2E = End-to-End
EA = Enterprise Architect
EAL = Evaluation Assurance Level (1-7 of Common Criteria)
EAM = Externalized Authorization Management
EAP = Extensible Authentication Protocol (a framework for port-based access control that uses the same three primary components that are used in the RADIUS standard)
EAR = Export Administration Regulations (US)
EBS = Elastic Block Store (Amazon)
ECDSA = Elliptic Curve Digital Signature Algorithm (algorithm for signatures)
EDA = Exploratory Data Analysis (Microsoft MLOps)
EDI = Electronic Data Interchange
EE = Enterprise Edition
EIN = Employer Identification Number
EC2 = Elastic Cloud Compute (AWS)
ECR = Elastic Container Registry (Amazon service)
ECS = Elastic Container Service (Amazon service)
ECU = EC2 compute unit (Amazon)
EDA = Event Driven Architecture (Serverless)
EDM = External Dependency Management (NIST)
EDR = Endpoint Detection and Remediation
EFA = Elastic Fabric Adapter (AWS)
EFS = Elastic File System (Amazon file storage service for EC2 instances)
EFT = Electronic Funds Transfer
EiB = Exbibyte (exa binary byte)
EIP = Elastic IP
ELA = Enterprise License Agreement
ELB = Elastic Load Balancer (AWS)
EMR = Elastic Map Reduce (AWS)
EKM = Extensible Key Management (HashiCorp Vault feature)
EKS = Elastic Kubernetes Service (AWS)
ELB = Elastic Load Balancer
ELT = Extract Load Transform
EMEA = Europe + Middle East + Africa
EMI = Electro-Magnetic Interference
EMR = Elastic Map Reduce (AWS ETL)
EMRFS = EMRFS (on AWS S3 encryption at rest)
ENA = Enhanced Networking Adapter (in AWS EC2 AMI instances)
ENI = Elastic Network Interface (AWS)
EPS = Earnings Per Share
ETL = Extract Transform and Load
EOQ = End of Quarter
EOM = End of Month
EO = Executive Order (from US White House)
EOP = Exchange Online Protection (Microsoft)
EOY = End of Year
ERM = Enterprise Risk Management
ERP = Enterprise Resource Planning (SAP does this)
EU = European Union
EV = Extended Validation (certificate)

F

FBL = Feedback Loop
FCI = Failover Cluster Instance (Microsoft SQL Server)
FDE = Full Disk Encryption
FEA = Federal Enterprise Architecture (by OMB)
FEDRAMP = Federal Risk and Authorization Management Program
FGAC = Fine-grained Access Control (AWS)
FHRP = First Hop Redundancy Protocol (for shared IP routing redundancy)
FIDO2 = Fast IDentity Online (Spec for web authorization using devices with PKI instead of passwords)
FIFO = First In - First Out
FIM = Federated Identity Management
FIM = File Integrity Monitoring
FM = Foundation Model (LLM for Generative AI)
FN = False Negative (test result that missed catching a bad/malicious sample)
FOMO = Fear Of Missing Out
FP = False Positive (test result that identified a legitimate sample as bad/malicious)
FQDN = Fully-qualified Domain Name
FPS = Flexible Payments Service
FTE = Full Time Employee/Equivalent
FQDN = Fully Qualified Domain Name
FSM = Finite State Machine
FYE = Fiscal Year End
FUD = Fear Uncertainty and Doubt

G

GAPP = Generally Accepted Privacy Principles (developed by accountants)
GA = General Availability
GAI = Generative Artificial Intelligence
GAM = Global Account Manager (job role)
GANS = Generative Adversarial Networks (Generative AI)
GB = Gigabytes (173741824 bytes or 1024 megabytes)
GCE = Google Compute Engine
GCP = Google Cloud Platform
GCM = Galois/Counter Mode (mode of operation for symmetric-key cryptographic block ciphers)
GDPR = General Data Protection Regulation (EU Regulation 2016/679)
GHA = GitHub Actions (SVM cloud purchased by Microsoft)
GID = Group Identifier (used in Kubernetes)
GKE = Google Kubernetes Engine (manages container images within Google cloud)
GKS = Google Kubernetes Service (runs container images within Google-managed Kubernetes)
GLB = Global Load Balancing
GNM = Global Network Manager (HashiCorp product feature)
GNU = GNU is Not Unix (a recursive acronym for the set of commands in Linux Bash scripts)
GPG = GNU Privacy Guard (software program to handle encryption)
GPS = Global Positioning System
GPT = GUID Partition Table (used with UEFI)
GRC = Governance and Risk and Compliance
gRPC = Global Remote Procedure Call (a protocol to connect services)
GRS = Geo-redundant Storage (Azure)
GSI = Global System Integrator
GTM = Go To Market
GUI = Graphical User Interface
GW = Gateway

H

H2M = Human to Machine (interface)
HA = High Availability
HADR = High Availability Disaster Recovery
HC = HashiCorp
HCL = HashiCorp Configuration Language
HD = High Definition
HEC = HTTP Event Collector (Splunk)
HCM = Human Capital Management (system for HR processes)
HCP = HashiCorp Cloud Provider
HCS = HashiCorp Consul Service (SaaS on Azure)
HIDS = Host-Based Intrusion Detection System
HIPAA = Health Insurance Portability and Accountability Act
HiPPO = Highest Paid Person???s Opinions
HMI = Human-Machine Interface
HPA = HorizontalPodAutoscaler (Kubernetes)
HPC = High-Performance Compute
HR = Human Resources
HSM = Hardware Security Module
HTML = HyperText Markup Language
HTTPS = HyperText Transfer Protocol Secure (the protocol that uses port 443)
HVA = High-Value Asset
HVM = Hardware Virtual Machine
HVN = HashiCorp Virtual Network

I

I18N = Internationalization (numeronym - 18 letters between “i” and “n”)
IA = Interoperability Agreement (between enterprises)
IaaS = Infrastructure as a Service
IaC = Infrastructure as Code
IAB = Internet Architecture Board (maintains an ethics-related statement concerning the use of the Internet. A technical advisory group of researchers and technical professionals responsible for Internet growth and management strategy and standards oversight.)
IAM = Identity and Access Management
IAP = Identity-Aware Proxy (Google Cloud)
IASAE = Information Assurance Security Architecture and Engineering
IAST = Interactive Application Security Testing
IBN = Internet-based Networking (for SDN)
IC = Integrated Circuit
ICFR = Internal Control over Financial Reporting
ICMP = Internet Control Message Protocol (used by the Linux ping command)
ICS = Industrial Control System (aka OT)
ICT = Information and Communication Technology
ICYMI = In Case You Missed It
ID = Identifier
IDaaS = Identity as a Service
IDE = Integrated Development Environment
IDOR = Insecure Direct Object Reference
IdP = Identity Provider (such as Okta)
IDP = Internal Developer Platform
IDS = Intrusion Detection System (A detective control used to detect attacks after they occur. A signature-based IDS (also called definition-based) uses a database of predefined traffic patterns. An anomaly-based IDS (also called behavior-based) starts with a performance baseline of normal behavior and compares network traffic against this baseline. An IDS can be either host-based (HIDS) or network-based (NIDS)
IEM = Infrastructure Event Management (AWS service to ensure high traffic can be accommodated)
IETF = Internet Engineering Task Force
IFS = Internal Field Separator
IGA = Identity Governance and Administration
IGW = Internet Gateway
IIoT = Industrial Internet of Things
IKE = Internet Key Exchange
ILB = Internal Load Balancer (Microsoft)
ILT = Instructor-Led Training
IM = Internet Messaging
IOA = Indicator of Attack
IOC = Indicator of Compromise
IOPS = Input Output Per Second (AWS)
iOS = (Mobile operating system for Apple iPhone)
IOT = Internet of Things
IP = Internet Protocol
IPAM = IP Address Manager (AWS feature that manages CIDR ranges)
IPE = Information Produced by the Entity
IPS = Intrusion Protection System (detect or prevent network security attacks such as brute force attacks)
IPsec = Internet Protocol security
IPO = Initial Public Offering
IRL = In Real Life (internet slang)
IRM = Information Rights Management
IRT = Incident Response Team
ISCP = Information System Contingency Plan
ISMS = Information Security Management System (ISO 27001)
ISO = International Standards Organization
ISSO = Information System Security Officer (in RMF)
ISP = Internet Service Provider (company providing access to the internet)
ISV = Independent Software Vendor
IT = Information Technologies
ITAR = International Traffic in Arms Regulations (US)
ITIL = Information Technology Infrastructure Library
ITSM = IT Service Management (implemented of Service Now)

ITU = International Telecommunication Union (defined X.509 certificate format)J

J2EE = Java Enterprise Edition
JIT = Just-In-Time (access for Zero Trust)
JEA = Just-Enough-Access (for Zero Trust)
JSON = JavaScript Notation
JWT = JSON Web Token (Internet standard for creating data with optional signature and/or optional encryption whose payload holds JSON that asserts some number of claims)

K

K8s = Kubernetes (numeronym of 8 letters between K and S)
kanban = Japanese word for visual signal (adopted for managing software workflow)
KCL = Kinesis Client Library (AWS)
KDC = Key Distribution Center
KEK = Key Encryption Key (key to encrypt the DEK)
KMIP = Key Management Interoperability Protocol
KMS = Key Management Service (AWS)
KPI = Key Performance Indicator
KPL = Kinesis Python Library (AWS)
KPU = Kinesis Processing Units (AWS streaming memory and compute)
KTS = Kubernetes Threat Detection (Google service)
KRI = Key Recovery Information
KV = Key-Value (data storage format)
KYC = Know Your Customer

L

LAMP = Linux OS + Apache web server + MySQL DB + PHP/Perl/Python (open-source web development technology stack)
L18N = Localization (numeronym of 18 letters between L and N)
LAN = Local Area Network
LDAP = Lightweight Directory Access Protocol (used by Linux to manage user and group access)
LF-TBAC = Lake Formation tag-based access control (AWS)
LI = Lead Implementer
LIFO = Last In - Last Out
LLC = Limited Liability Company
LLM = Large Language Model (such as GPT-x for Generative AI)
LMS = Learning Management System
LRS = Locally-Redundant Storage (Microsoft)
LTM = Last Twelve Months
LUKS = Linux Unified Key Setup (root + boot + swap partition encryption)
LUN = Logical Unit Number (within a physical storage device volume manager)

M

MAC = Media Access Control (address of NIC card)
MAC = Message Authentication Code (a tag appended to a message to verify its authenticity)
MAP = Minimum Acceptable Product
MBR = Master Boot Record
MCSB = Microsoft Cybersecurity Security Benchmark (best-practice framework using Microsoft Defender for Cloud. Successor of Azure Security Benchmark v3)
MCRA = Microsoft Cybersecurity Reference Architectures
MDTI = Microsoft Defender Threat Intelligence
MDM = Mobile Device Management
MEF = Mission Essential Functions
MELT = Metrics + Errors + Traces + Logs (for Observability)
MFA = Multi-Factor Authentication
MIG = Managed Instance Group (for autoscaling within Google Cloud)
MIT = Most Important Task
MitB = Man-in-the-Browser (attack vector such as Port stealing that exploits the binding between a port and a media access control (MAC) address)
MitM = Man-in-the-Middle (an attack in the form of active interception allowing an attacker to intercept traffic and insert malicious code sent to other clients. Kerberos provides mutual authentication and helps prevent MITM attacks)
ML = Machine Learning
MLM = Masked Language Model (such as BERT for Natural Language Processing)
MS = Microsoft
MSA = Master Service Agreement
MSK = Managed Streaming for Kafka (AWS)
MSI = Managed Service Identity
MTD = Month-To-Date
mTLS = Mutual TLS
MOR = Minimum Operating Requirements (describes the minimum environmental and connectivity requirements in order to operate computer equipment)
MSI = Microsoft Software Installer (file extension for Microsoft Windows installer files)
MTD = Maximum Tolerable Downtime
MQTT = MQ Telemetry Transport
MSAL = Microsoft Authentication Libraries
MSP = Managed Service Provider
MSSP = Managed Security Service Provider
MTA = Mail Transfer Agent
MTTA = Mean Time To Acknowledge
MTTD = Mean Time To Detect
MTTR = Mean Time To Restore/Remediate
MTU = Maximum Transmission Unit (networking)
MVP = Minimum Viable Product
MVP = Most Valuable Professional (Microsoft)
MY = Multi-Year

N

NAC = Network Admission Control/Controller (Cisco)
NAD = Network Access Devices
NAT = Network Address Translation (allows devices on a private network to communicate with a public network through a networking gateway)
NB = No Problem
NDA = Non-Disclosure Agreement
NDAA = National Defense Authorization Act of 2020 and 2021
NDE = Net Dollar Expansion
NDRR = Net Dollar Retention Rate
NFR = Non-Functional Requirements
NFS = Network File System
NFV = Network Function Virtualization
NGFW = Next-Generation firewall (Originally from Palo Alto - it examines application data to filter traffic at the highest application layer of networks)
NIA = Network Interface (HashiCorp product feature)
NIACAP = National Information Assurance Certification and Accreditation Process
NIAP = National Information Assurance Partnership (Common Criteria)
NIC = National Interface Card
NIST = National Institute of Standards and Technology (US)
NLB = Network Load Balancer (Amazon)
NOC = Network Operations Center
NoSQL = (Nonrelational database system such as key-value pair document storage in DynamoDB)
NPS = Net Promoter Score (rating by customers willing to promote to others)
NSG = Network Security Group (Azure)
NSP = Next Sentence Prediction (GenAI for BERT Natural Language Processing)
NTA = Network Traffic Anomaly
NTM = Next Twelve Months
NTP = Network Time Protocol
NVD = National Vulnerability Database (weaknesses in the computational logic code maintained by the US government for the world)

O

O3DE = Open 3D Engine (open-source 3D game development engine from Amazon. Successor to Amazon Lumberyard)
OAI = Origin Access Identity (virtual identity used to require users to access content via CloudFront URl instead of S3 URL)
OASIS = Organization for the Advancement of Structured Information Standards (defined CSAF and CVRF)
OCI = Container Open Initiative (for Kubernetes to replace Docker)
OCSP = Online Certificate Status Protocol
OCM = Organizational Change Management
ODNI = Office of the Director of National Intelligence
OEM = Original Equipment Manufacturer
OEP = Occupant Emergency Plan
OIDC = OpenID Connect
OKR = Objective and Key Results
OLA = Operational Level Agreement
OLAP = OnLine Analytical Processing (A business intelligence approach that allows users to analyze large amounts of data from different points of view)
OLTP = OnLine Transaction Processing
OKR = Objectives and Key Results
OOP = Object Oriented Programming
OPA = Open Policy Agent (Policy as Code agent from Styra used in Kubernetes Admission Controller and Terraform)
OPEX = Operating Expenditures (impacts Profit and Loss statement for current periods)
OS = Operating System
OSCAL = Open Security Controls Assessment Language (NIST-defined format for communicating CVEs)
OSCP = Online Certificate Status Protocol (used to obtain the revocation status of X.509 digital certificates)
OSI = Open Systems Interconnection
OSINT = Open Source Intelligence
OSS = Open Source Software
OT = Operational Technology
OTP = One-Time Password
OVAL = Open Vulnerability and Assessment Language
OU = Organizational Unit
OWASP = Open Web Application Security Project

P

PaC = Policy as Code
PaaS = Platform as a Service
PAM = Privileged Access Management
PASTA = Process for Attack Simulation and Threat Analysis
PAT = Port Address Translation (networking)
PAW = Privileged Access Workstation (Microsoft)
PAYG = Pay-As-You-Go (for billing)
PBC = Provided By Client (SOC term)
PC = Personal Computer (refers to a Microsoft Windows machine)
PCI = Peripheral Components Interconnect
PCI DSS = Payment Card Industry Data Security Standard (private regulation by credit card processors to prevent identity theft)
PDD = Project Delivery Document (HashiCorp doc containing IS project scope prerequisites scheduling info etc.)
PDF = Portable Document Format (the format created by Adobe to create a univerally accessible file containing graphics and text)
PEM = Privacy Enhanced Mail (AWS private key certificate encoding file type)
PEP = Policy Enforcement Point (filters requests and makes eXtensible Access Control Markup Language (XACML) to a Policy Decision Point (PDP)
PETM = Parameter-Efficient Tuning Methods (in Generative AI)
PFS = Perfect Forward Secrecy
PHD = Personal Health Dashboard
PHI = Protected Health Information
PHP = (recursive acronym for PHP: Hypertext Preprocessor. A web scripting language used in WordPress)
PHS = Password Hash Synchronization (Microsoft Azure AD Connect)
PID = Process Identifier
PII = Personally Identifiable Information
PIM = Privileged Identity Management
PIN = Personal Identification Number (a secret consisting of a small number)
PIOPS = Provisioned Input Output Operations Per Second
PIV = Personal Identity Verification
PKE = Public Key Encryption
PKI = Public Key Infrastructure (manages cryptographic certificates)
PM = Product Management/Manager
PLC = Programmable Logic Controller
P&L = Profit and Loss
PMM = Product Marketing Manager (organizational role)
PMO = Program Management Office
POA&M = Plan of Action and Milestones
PoC = Proof of Concept
POLP = Principle of Least Privilege
POM = Production Operations Management
POR = Process of Record
PPG = Point-to-Point Tunneling Protocol (networking)
PPG = Proximity Placement Group (Azure VMs)
PPK = Putty Private Key (AWS private key certificate encoding file type for Windows PuTTY SSH client)
PPTP = Point-to-Point Tunneling Protocol
PR = Pull Request (GitHub feature for suggesting code changes and integrating them into the main code base)
PS = Professional Services
PSE = Professional Services Engineer
PSIRT = Product Security Incident Response Team (at Cisco)
PSK = Pre-Shared Key
PTA = Pass-Through Authentication (agents in Microsoft Azure AD Connect)
PUA = Potentially Unwanted Application
PV = Persistent Volume (Kubernetes)
PV = Paravirtual Virtualization (type of Linux AMI boot loader)
PVC = Persistent Volume Claim (Kubernetes)
PWC = Price Waterhouse Coopers (International Global Integrator Consulting firm)

Q

QA = Quality Assurance
QBR = Quarterly Business Review
QKD = Quantum Key Distribution (secures communication using a cryptographic protocol involving quantum computing with lasers)
QLDB = Quantum Ledger Database (AWS)
QoQ = Quarter on Quarter
QoS = Quality of Service

R

RACI = Responsible + Accountable + Consulted + Informed (Responsibility Assignment Matrix)
RAID = Redundant Array of Independent Disks
RAM = Random Access Memory
RAN = Radio Access Network
RASP = Runtime Application Self-Protection
RAT = Remote Access Trojan
RBAC = Role-Based Access Control
RBG = Random Bit Generator
RCA = Root Cause Analysis
RCE = Root Code Execution
RDP = Remote Desktop Protocol (Microsoft technology for users to access a Windows computer remotely)
RDS = Relational Database Service (AWS cloud SQL service to host databases)
REST = Representational State Transfer
RFI = Request for Information
RFP = Request for Proposal
RFQ = Request for Quote
RGB = Red Green Blue (colors)
RGDD = Reliable Group Data Delivery (SDN)
RISC = Reduced Instruction Set Computing
RMF = Risk Management Framework (NIST ISO 27001)
RNN = Recurrent Neural Network (in Deep Learning)
ROA = Return on Assets
ROC = Report on Compliance (issued by DCS PSI auditors)
ROE = Return on Equity
ROI = Return on Investment
ROM = Read-only Memory
ROS = Return on Sales
ROSA = Red Hat OpenShift Service on AWS (containers)
RPA = Robotic Process Automation
RPC = Remote Procedure Call
RPO = Recovery Point Objective
RPS = Requests Per Second
RRA = Rapid Risk Assessment
RRS = Reduced Redundancy Storage (AWS)
RSA = Resident System Engineer (role within HashiCorp)
RSA = Rivest + Shamir + Adleman (an encryption algorithm and company named based on the initials of its inventors)
RTC = Real Time Clock
RTO = Recovery Time Objective
RTSP = Real-Time Streaming Protocol (AWS Kinesis)
RUM = Resources Under Management (HashiCorp Terraform at scale)
RaMP = Rapid Modernization Plan (Microsoft Zero Trust)

S

S3 = Simple Storage Service (AWS file object service)
SaaS = Software as a Service
SAM = Serverless Application Model (Amazon CLI)
SAML = Security Assertion Markup Language (XML-based standard for authentication and authorization)
SAN = Storage Area Network
SAP = Systems Applications and Product (large German ERP software company)
SAP = System Assessment Plan
SAQ = Self-Assessment Questionaire (of DSS PCI)
SAR = Security Assessment Report
SARIF = Static Analysis Results Interchange Format (standard by OASIS for sharing static vulnerability analysis results)
SARs = System Assessment Results
SASE = Secure Access Service Edge (Microsoft & Trust Broker SaaS by Palo Alto Prisma zScaler Cato Cloudfare)
SAST = Static Application Security Testing
SBI = Service-Based Interface
SBOM = Software Bill of Materials
SCA = Software Composition Analysis (identify vulnerable components in containers)
SCADA = Supervisory Control And Data Acquisition
SCC = Security Command Center (Google’s SOC service)
SCEP = Simple Certificate Enrollment Protocol
SCM = Source Control Manager (such as GitHub)
SCP = Service Control Policy (in AWS to govern the use of other IAM policies)
SCSS = Sidecar Container Security Stack
SCT = Schema Conversion Tool (AWS)
SDE = Standardized Development Environment
SDK = Software Development Kit
SDN = Software-Defined Networking (used by AWS - an advancement to BGP used on public networks)
SDLC = System Development Life Cycle
SDMN = Software-defined Mobile Network (for SDN)
SDP = Software Defined Perimeter
SEB = Secure Enterprise Browsers
SES = Simple Email Service (AWS)
SF = Service Fabric (Azure)
SG = Security Group
SHA = Secure Hash Algorithm (a method to identify whether a file has been altered - also used by GitHub to create an index)
SHD = Service Health Dashboard (AWS)
SI = Systems Integrator
SIA = Storage Infrequent Access (AWS)
SIEM = Security Information and Event Management
SIG = Special Interest Group
SIRT = Security Incident Response Team (work in a SOC department)
SLA = Service Level Agreement
SLE = Single Loss Expectancy
SLI = Service Level Indicator
SLO = Service Level Objective
SLR = Service Linked Role (in IAM for Amazon Lightsail)
SLSA = Supply chain Levels for Software Artifacts (4-level framework for ensuring the integrity of software)
SME = Subject Matter Expert
SMF = Session Management Function
SMI = Service Mesh Interface
SNMP = Simple Network Management Protocol
SMaaS = Service Mesh as a Service
SMTP = Simple Mail Transfer Protocol
SNI = Server Name Indication (SSL)
SNS = Simple Notification Service (to send and receive notifications in AWS)
SOA = Service Oriented Architecture
SOAP = Simple Object Access Protocol (uses XML)
SOAR = Security Orchestration Automation and Response
SOW = Statement of Work
SOC = Security Operations Center
SOC2 = Systems and Organization Controls (AICPA ISO 27701)
SOP = Standard Operating Procedure
SORN = System of Record Notice
SOX = Sarbanes-Oxley Act
SPI = Service Provider Interface
SPI = Secure Personal Information
SPICE = Super-fast, Parallel, In-memory Calculation Engine (used in AWS QuickSight)
SPIFFE = Secure Production Identity Framework for Everyone (spec used by Consul Connect service mesh for establishing service identities)
SPOC = Single Point of Contact
SPOF = Single Point of Failure
SPLK = Splunk’s stock ticker symbol
SPSCR = Security, Privacy, and Supply Chain Risks (in RMF)
SQL = Structured Query Language
SQS = Simple Queue Service (AWS hosted queues of messages)
SRA = Security Reference Architecture
SRE = Site Reliability Engineer (job role)
SSAE = Statement on Standards for Attestation Engagements
SSD = Solid-State Drive (data storage)
SSE = Security Service Edge
SSE = Server-Side Encryption
SSDLC = Secure Software Development Lifecycle
SSH = Secure Shell (a Linux feature to enable remote access of computers)
SSI = Sensitive Security Information
SSIS = SQL Server Integration Services (Microsoft)
SSL = Secure Sockets Layer (deprecated by TLS networking protocol)
SSN = Social Security Number (issued by the US government to unique identify an individual for taxes)
SSO = Single Sign On
SSP = System Security Plan
SSRF = Server Side Request Forgery
SSRM = Shared Security Responsibility Model
SSRS = SQL Server Reporting Services (Microsoft)
STIX = Structured Threat Information eXpression (API of sharing models by MITRE)
STRIDE = Spoofing of user identity; Tampering; Repudiation; Information disclosure (privacy breach or data leak); Denial of service (DoS); Elevation of privilege
STS = Security Token Service (AWS)
STS = StatefulSets (Kubernetes)
SUT = System Under Test
SVID = SPIFFE Verifiable Identity Document (cryptographic file used by a workload to prove its identity to a resource or caller)
SWF = Simple Workflow (service from AWS for developers to run tasks in parallel or sequentially)
SWG = Secure Web Gateway

T

TAM = Technical Account Manager
TAM = Total Addressable Market (marketing)
TaS = Test as Service
TAXII = Trusted Automated eXchange of Intelligence Information (how to share)
TB = TerraByte
TBD = To Be Decided (common vernacular)
TCO = Total Cost of Ownership
TDE = Transparent Data Encryption (HashiCorp Vault feature to substitute encrypted values in databases instead of HSMs)
TDM = Technical Decision Maker (vs. Business Decision Maker)
TFC = Terraform Cloud (SaaS Terraform offering)
TFE = Terraform Enterprise (self-installed/managed Terraform)
TIC = Trusted Internet Connection
TIN = Tax Identification Number
TIP = Threat Intelligence Platform
TCSEC = Trusted Computer System Evaluation Criteria
TCO = Total Cost of Ownership
TDD = Test-Driven Development
TDM = Technical Decision Maker
TFE = Terraform Enterprise
TGW = Transit GateWay (in AWS cloud)
TH = Threat Hunting
TIP = Threat Intelligence Platform
TLD = Top Level Domain (the letters after the last dot on URLs processed by DNS)
TLS = Transport Layer Security
TMI = Too Much Information (common vernacular)
TOE = Target of Evaluation (what is being evaluated by the Common Criteria EAL)
TOFU = Trust On First Use
TOTP = TIme-based One Time Password
TPISRM = Third Party Information Security Risk Management
TPM = Trusted Platform Module
TPRM = Third Party Risk Management
TSC = Trust Service Criteria
TSI = Trustworthy Software Initiative (UK)
TTL = Time to Value (marketing term)
TTL = Time To Live
TTP = Trusted Third Party
TTP = Tactics + Techniques + Procedures (of security attack)
TTS = Text To Speech
TVM = Threat and Vulnerability Management (Microsoft)

U

UAC = User Account Control (on Windows)
UAT = User Acceptance Test
UCS = User
UDM = Unified Data Management
UDS = Unified Diagnostic Services (use in vehicles)
UEBA = User and Entity Behavior Analytics (detect any anomalous behavior - deviations from normal patterns of usage which have security implications)
UEFI = Unified Extensible Firmware Interface (spec. replaces BIOS to boot-up disks larger than 2TB)
UEM = Unified Endpoint Management/Manager (Microsoft Intune and Config. Manager)
UDP = User Datagram Protocol (networking)
UML = Unified Modeling Language
UPF = User Plane Function
UPN = User Principal Name (Microsoft)
URI = Universal Resource Identifier
URL = Universal Resource Locator
URM = Under-Represented Minority
USB = Universal Service Bus
UTC = Coordinated Universal Time (the new term for GMT)
UTF = Unicode Transformation Format
UX = User eXperience

V

VAR = Value-Added Reseller
VAT = Value-Added Tax
VBO = Value-Based Outcome
VCS = Version Control System
VDP = Vulnerability Disclosure Program
VGW = Virtual Gateway (Amazon AWS)
VIF = Virtual InterFace (networking)
VIM = Virtualized Infrastructure Manager (AWS)
VIP = Virtual IP (address)
VLAN = Virtual Local Area Network
VM = Virtual Machine
VMSS = Virtual Machine Scale Set (Azure)
VMM = Virtual Machine Manager (aka Hypervisor)
VNC = Virtual Network Computing
VNF = Virtual Network Function
VoIP = Voice over Internet Protocol
VRRP = Virtual Router Redundancy Protocol
VRM = Vendor Risk Management
VPA = Vertical Pod Autoscaler (Kubernetes)
VPC = Virtual Private Cloud (AWS)
VPG = Virtual Private Gateway (AWS)
VPS = Virtual Private Server (AWS)
VPN = Virtual Private Network
VSM = Value Stream Mapping
VTL = Virtual Tape Library
vTPM = Virtual Trusted Platform Module
VUCA = Volatile + Uncertain + Complex + Ambiguous

W

W3C = World Wide Web Consortium
WAAP = Web application and API protection (a comprehensive security approach as an enhancement over web application firewalls)
WABD = Well Architected By Design
WAF = Web Application Firewall (AWS)
WAF = Well-Architected Framework
WAN = Wide Area Network
WBS = Work Breakdown Structure
WEP = Wired Equivalent Privacy
WFH = Work From Home
WIP = Work In Process
WPA = Wi-Fi Protected Access
WSDL = Web Services Description Language
WSFC = Windows Server Failover Clustering/Cluster (Microsft)
WVD = Windows Virtual Desktop (Microsoft)

X

X.509 = (certificate format used for HTTPS on web servers digitally sign application code secure email and authenticate devices to corporate networks)
XaaS = Anything as a Service
XKX = External Key Store (Amazon service to store secrets outside of AWS)
XDR = Extended Detection and Response (formerly Microsoft Security Center)
XML = Extensible Markup Language
XMPP = Extensible Message and Presence Protocol

Y

YAML = YAML Ain’t Markup Language (Human-readable data-serialization text format)
YTD = Year-To-Date

Z

ZRS = Zone-Redundant Storage (Microsoft)
ZT = Zero Trust
ZTA = Zero Trust Architecture
ZTDA = Zero Trust Data Access
ZTNA = Zero Trust Network Access/Architecture
ZTS = Zero Trust Security

#

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D

E

F

G

H

I

ITU = International Telecommunication Union (defined X.509 certificate format)J

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