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How can you simulate security attacks to assess software resilience?

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How can you simulate security attacks to assess software resilience? This is a crucial question for software developers who want to ensure their applications can withstand malicious attempts to compromise their functionality, data, or availability. In this article, you will learn about some common types of security attacks, how to use tools and frameworks to emulate them, and how to measure and improve your software resilience.

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Brian A.

Technical Lead | Software Developer | Msc Computer Security

1 Common security attacks

Security attacks can target different aspects of your software, such as its network communication, user authentication, data encryption, or code execution. Common examples of these attacks include denial-of-service (DoS) attacks, which attempt to overwhelm your server or network with excessive requests or traffic; injection attacks that exploit vulnerabilities in your input validation or database queries; cross-site scripting (XSS) attacks that inject malicious scripts into your web pages; cross-site request forgery (CSRF) attacks that trick users into performing unwanted actions; and man-in-the-middle (MITM) attacks that intercept and modify the communication between your server and users. All of these can compromise user session, cookies, personal information, funds, passwords, or accounts.

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David Boyowa Ogbeide

Full Stack Developer in Front-End Specialization
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- Deploy your app to a test server, - Have a test suite that tests all of the potential vulnerabilities and new ones as they are discovered. - Log results in test data

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Budi Rahardjo
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- Build normal test scenarios - Build abnormal test scenarios - Use fuzzing to mutate test data and build abnormal data for testing

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2 Simulation tools and frameworks

To simulate security attacks, you need tools and frameworks that can generate and send malicious requests, payloads, or packets to your software and monitor and analyze the responses. Depending on the type of attack you want to simulate, you can use different tools and frameworks. For example, JMeter, LoadRunner, or Siege can be used to create and execute load tests that simulate high volumes of concurrent users or requests for DoS attacks. SQLmap, Nmap, or OWASP ZAP can be used to scan and exploit SQL injection, command injection, or other injection vulnerabilities for injection attacks. XSSer, BeEF, or OWASP ZAP can generate and inject malicious scripts or forms into web pages or applications for XSS and CSRF attacks. Lastly, Wireshark, Ettercap, or MITMproxy can be used to capture and manipulate the network traffic between your server and your users for MITM attacks.

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Brian A.

Technical Lead | Software Developer | Msc Computer Security
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Burpsuite a very injection tool that can be used to simulate session injections and man in the middle. It can intercept data and even generate false data to trick the server into believing it come from the right source. Sometimes we deploy software that exposes new unmonitored ports on a server especially if your application uses FTP or Socket. NMAP and simple netstat -tlnup commands can help detect if the proccess started by you application has opened up other extra ports which you may give you an idea on what inbound firewalls rules you may require ( using physical FWs or even iptables.

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3 Resilience measurement and improvement

Measuring and improving software resilience requires defining and monitoring key performance indicators (KPIs), such as availability, response time, error rate, data integrity, and data confidentiality. To enhance software security, reliability, and scalability, best practices and strategies should be implemented. These include applying secure coding principles and standards, performing regular security testing and auditing, adopting a DevSecOps approach, leveraging cloud services and architectures, and implementing backup and recovery plans. Doing so can help prevent or mitigate common security vulnerabilities in your software, identify and fix any security issues or gaps in your software, increase elasticity, redundancy, and fault tolerance to reduce attack surface and dependency on single points of failure, as well as ensure that your software can restore its normal operation and data in case of a security breach or incident.

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4 Here’s what else to consider

This is a space to share examples, stories, or insights that don’t fit into any of the previous sections. What else would you like to add?

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Brian A.

Technical Lead | Software Developer | Msc Computer Security
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If your software collects and proccesses data using forms, consider the following Regex simulators i.e. PHP live Regex browser extensions which can help generate random input combinations to help you test your input validation and limits. A packet sniffer & analyser i.e. unix TCPDUMP or wireshark can be used to analyse how data is exchanged from between your application stack, this can help show you if have loopholes in your headers, how session data is being exchanged ( rmember if you are using plain API tokens, they can be stolen and used somewhere else), a packet sniffer also helps to show how data is encrypted over the network, it can give you hints on what a prospecting attacker sees.

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Budi Rahardjo
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Sometimes this is already too late since the software development does not consider security as part of the development. Security should be considered in all phases of software development, hence the Secure Software Development Life Cycle.

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How can you simulate security attacks to assess software resilience?

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1 Common security attacks

2 Simulation tools and frameworks

3 Resilience measurement and improvement

4 Here’s what else to consider

Software Development

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How can you simulate security attacks to assess software resilience?

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1 Common security attacks

2 Simulation tools and frameworks

3 Resilience measurement and improvement

4 Here’s what else to consider

Software Development

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