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How can you secure a Go application from cyberattacks?

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Go is a popular programming language for building fast, scalable, and reliable web applications. However, like any other software, Go applications can also be vulnerable to cyberattacks if not properly secured. In this article, you will learn some basic tips and best practices to protect your Go application from common threats such as SQL injection, cross-site scripting, and denial-of-service attacks.

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Mehul Sachdeva

Lead SDE @ Bank of New York | CSE, BITS Pilani | MITACS GRI 2022 | Apache Iceberg, Contributor | Dremio | Samsung…
Syed Aneeb Ali

Senior Software Engineer @Salesflo <Google Certified> . Android ( Kotlin . Jetpack . KMP) | Flutter . iOS

1 Use prepared statements

One of the most common ways that hackers can compromise your Go application is by injecting malicious SQL queries into your database. This can result in data loss, corruption, or unauthorized access. To prevent this, you should always use prepared statements when executing SQL queries in your Go code. Prepared statements are pre-compiled and parameterized queries that separate the data from the query logic, making it harder for attackers to manipulate the input. You can use the database/sql package or an ORM library to create and execute prepared statements in Go.

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2 Sanitize user input

Another common attack vector is cross-site scripting (XSS), which occurs when hackers insert malicious scripts into your web pages through user input. This can allow them to steal cookies, session tokens, or other sensitive information from your users or perform actions on their behalf. To prevent this, you should always sanitize user input before rendering it on your web pages. Sanitizing means removing or escaping any HTML tags, attributes, or characters that could execute as code. You can use the html/template package or a third-party library to sanitize user input in Go.

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Mehul Sachdeva

Lead SDE @ Bank of New York | CSE, BITS Pilani | MITACS GRI 2022 | Apache Iceberg, Contributor | Dremio | Samsung Electronics
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TLS/SSL Encryption: Enforce secure communication by using Transport Layer Security (TLS/SSL). Configure your Go application to serve over HTTPS. Secure Password Handling: Hash and salt passwords using a robust cryptographic hash function like bcrypt. Avoid using plain text or weak hashing algorithms. Security Headers: Set appropriate security headers in HTTP responses. For example, include headers like Strict-Transport-Security to enforce secure connections.

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Syed Aneeb Ali

Senior Software Engineer @Salesflo <Google Certified> . Android ( Kotlin . Jetpack . KMP) | Flutter . iOS
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It's like cleaning up after a messy guest—ensuring that any input from users is properly sanitized and validated prevents malicious code from slipping through and wreaking havoc on your application.

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3 Implement HTTPS

HTTPS is a protocol that encrypts the communication between your Go application and your users, ensuring that no one can intercept, modify, or tamper with the data. HTTPS also helps you establish trust and credibility with your users, as it shows that you care about their privacy and security. To implement HTTPS, you need to obtain a valid SSL/TLS certificate from a trusted authority and configure your web server or framework to use it. You can use the net/http package or a third-party library to enable HTTPS in your Go application.

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Syed Aneeb Ali

Senior Software Engineer @Salesflo <Google Certified> . Android ( Kotlin . Jetpack . KMP) | Flutter . iOS
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Picture HTTPS as a secure tunnel for communication—it encrypts data flowing between your application and users, shielding it from prying eyes and potential cyber threats.

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4 Limit requests

A denial-of-service (DoS) attack is when hackers flood your Go application with a large number of requests, overwhelming your server and making it unavailable or slow for legitimate users. To prevent this, you should limit the number of requests that your Go application can handle per user, IP address, or time interval. This way, you can filter out malicious or excessive traffic and maintain a stable performance. You can use the net/http package or a third-party library to implement rate limiting or throttling in your Go application.

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Syed Aneeb Ali

Senior Software Engineer @Salesflo <Google Certified> . Android ( Kotlin . Jetpack . KMP) | Flutter . iOS
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Imagine your application as a popular restaurant—if too many customers flood in at once, it can overwhelm your resources. Limiting requests helps prevent denial-of-service attacks by managing the flow of traffic and keeping your application responsive.

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Abhineet Sagar

Engineer II, Security Engineering @Circles
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Adding SAST into shift left process. Critical APIs, they should be behind WAF and probably configured. Use infrasecurity security tool to complete the package.

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5 Handle errors

Errors are inevitable in any software development, but they can also expose your Go application to cyberattacks if not handled properly. Errors can reveal sensitive information about your system, such as file paths, configuration details, or stack traces, that hackers can use to exploit your vulnerabilities. To prevent this, you should always handle errors gracefully in your Go code, using the built-in error type or a custom error type. You should also avoid displaying raw error messages to your users, and instead use friendly and informative messages that do not disclose any internal details. You can use the log package or a third-party library to log and monitor your errors in Go.

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Syed Aneeb Ali

Senior Software Engineer @Salesflo <Google Certified> . Android ( Kotlin . Jetpack . KMP) | Flutter . iOS
(已编辑)
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Just like having a plan for unexpected mishaps at a party, handling errors gracefully in your application ensures that even if something goes wrong, it won't bring the whole operation crashing down, potentially exposing vulnerabilities to attackers.

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6 Update dependencies

Dependencies are external packages or libraries that you use in your Go application to add functionality or simplify your code. However, dependencies can also introduce security risks if they are outdated, unmaintained, or contain vulnerabilities. To prevent this, you should always update your dependencies regularly, using the go get command or a dependency management tool. You should also check the reputation and quality of your dependencies, using sources such as GitHub, Go Report Card, or GoDoc, and avoid using dependencies that are insecure or unreliable.

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Syed Aneeb Ali

Senior Software Engineer @Salesflo <Google Certified> . Android ( Kotlin . Jetpack . KMP) | Flutter . iOS
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Think of outdated dependencies as weak links in a chain—they're more susceptible to exploitation by cybercriminals. Keeping your dependencies up to date patches known vulnerabilities and strengthens your application's defenses.

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7 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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Syed Aneeb Ali

Senior Software Engineer @Salesflo <Google Certified> . Android ( Kotlin . Jetpack . KMP) | Flutter . iOS
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Cybersecurity is an ongoing battle, so staying vigilant and proactive is key. Regularly assess your application for vulnerabilities, educate yourself and your team on emerging threats, and consider implementing additional security measures such as authentication, authorization, and intrusion detection systems.

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How can you secure a Go application from cyberattacks?

1

2

3

4

5

6

7

1 Use prepared statements

2 Sanitize user input

3 Implement HTTPS

4 Limit requests

5 Handle errors

6 Update dependencies

7 Here’s what else to consider

Computer Science

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How can you secure a Go application from cyberattacks?

1

2

3

4

5

6

7

1 Use prepared statements

2 Sanitize user input

3 Implement HTTPS

4 Limit requests

5 Handle errors

6 Update dependencies

7 Here’s what else to consider

Computer Science

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