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Automated Security Testing for Developers

automated security testing

Today, more than ever before, development organizations are focusing their efforts on reducing the amount of time it takes to develop and deliver software applications. While this increase in velocity provides significant benefits for the end users and the business, it does complicate the process for testing and verifying the function and security of a release.

The days of long-running, waterfall-style development cycles, wherein security was manually evaluated and bolted on at the end, are gone for good. With the move towards an agile development methodology, security testing and remediation is inherently shifting to the left. And to support this, developers must adopt tools to automate security testing for easy vulnerability identification at the earliest point possible in the development lifecycle.

Below, we discuss the why and how of implementing an effective strategy for automated security testing within the development lifecycle.

Shifting security testing to the left

Through the use of automation, security testing can be executed earlier (or left) in the development pipeline. This is advantageous for a variety of reasons. For one, the earlier vulnerabilities are discovered, the less expensive they are to fix. If a security issue was introduced into the code early in the release cycle, it’s more likely that it’ll be resolved in minutes or hours. Whereas, a vulnerability discovered at the end of the release cycle could face complexity that increases the time required to remediate.

Moreover, earlier execution of security tests ensures that vulnerabilities pose less of a threat to the delivery schedule. When security tests are automated as part of the build and integration processes, there is less uncertainty as the release approaches the later stages of the development lifecycle. This reflects well on both development personnel and the organization as a whole.

Shifting security left can also help reduce security debt, which piles up over time and can only add to serious risk if left unchecked. Instead of leaving the prioritization and remediation of bugs and vulnerabilities until the very end, shifting security left encourages collaboration between security and development to tackle this issue and determine which security debt is acceptable, and which should be remediated ASAP, reducing lingering risk.

Automated security testing for developers

So with the intent being to automate and shift security testing to the earliest possible point in the development lifecycle, let’s analyze how this is done in practice.

What are we looking for when we test? What does automated security testing involve?

Automated security testing for applications is accomplished by scanning code for vulnerabilities. Static code analysis, for instance, scans a codebase while the application is not running. The code is evaluated against a set of policies to ensure that developer implementation is in compliance with the security standards set forth by the organization. Non-compliance with any standard would indicate a vulnerability. These vulnerabilities can include anything from failure to properly protect database calls from SQL injection, to non-compliance with PCI standards for processing, storing, and transmitting credit card information. Furthermore, automated security testing can be leveraged to validate the security of third-party libraries being used by the system.

Organizations that wish to shorten their development cycles and enable continuous delivery should utilize security analysis tools early and often, throughout their development lifecycle. This means leveraging IDE integrations that allow developers to scan their code at their convenience and to include security scanning as part of the build and integration processes – just as is done for other forms of automated application testing.

Making sense of your automated security testing options

There are some specific aspects to consider when evaluating options for automated security testing.

Infrastructure considerations

When talking about automated security scanning options, one question is the infrastructure required to support it. Should your strategy involve the use of on-premises tools or those that are cloud-based? From an infrastructure perspective, cloud-based automated security testing platforms provide several important advantages.

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