In security, the earlier you find a problem, the easier it usually is to deal with. The same is true in software development. If security problems are found only after an application is ready for release, fixing them can delay projects and increase costs. That's why many organizations are adopting a "Shift Left" approach, bringing security checks into the early stages of software development instead of waiting until the end.
Two common security checks used during software development are static application security testing (SAST) and software composition analysis (SCA).
SAST looks at the application's source code for security weaknesses. SCA looks at the open-source and third-party components the application depends on and checks for known vulnerabilities or outdated versions.
Together, these tools help developers identify problems while they are still writing code, making security a natural part of development rather than a last-minute task.
The Challenge
Although many companies invest in SAST and SCA tools, simply installing them doesn't automatically improve security.
One of the quickest ways to lose developer trust is to send developers too many findings. If every scan produces hundreds of low-risk issues, duplicates and false positives, the important problems get buried. When developers are overwhelmed with alerts, they often struggle to identify which issues truly matter. Instead of helping the development process, security becomes frustrating, and eventually the scans may be ignored altogether.
Successful application security is not about generating more alerts; it is about giving developers clear and useful guidance.
Make Security Simple
A practical Shift Left strategy should make developers' jobs easier, not harder. Instead of blocking every software build, organizations should focus on fixing vulnerabilities that present real business risk. For example, high-risk issues such as SQL injection, hardcoded credentials or libraries with critical known vulnerabilities require immediate attention. Less severe findings can be reviewed and scheduled for future improvements.
Security reports should also explain why an issue is important and provide simple recommendations for fixing it. When developers clearly understand the problem, they can resolve it much faster.
Build Security into the Development Process
SAST and SCA work best when they are built into the CI/CD process developers already use. That way, security checks happen as part of normal development instead of becoming a separate step at the end.
A balanced approach might include:
- Running quick security scans whenever developers submit code.
- Performing deeper scans before software is released.
- Blocking releases only when the risk is serious enough to justify it, such as critical or high-risk vulnerabilities that need immediate action.
- Providing clear reports that explain how to fix problems.
This allows developers to receive fast feedback while keeping projects moving forward.
Lessons From My Experience
Throughout my experience implementing Secure SDLC and DevSecOps practices, I have learned that developer adoption is more important than the number of security tools you use.
In one application security program I worked on, our initial SAST and SCA scans produced a large number of findings across several applications. Developers found it difficult to separate urgent vulnerabilities from duplicate, low-risk or false-positive results.
Instead of expecting developers to fix everything, we reviewed the findings, reduced unnecessary scan rules, removed false positives, and prioritized only the vulnerabilities that posed real security risks.
Once we reduced the noise, the conversations changed. Developers were more willing to engage with the findings, and the issues that mattered were addressed much earlier.
Another lesson was that developers appreciate guidance. Simply reporting a vulnerability isn't enough. Explaining why it matters and how to fix it makes remediation much faster and builds stronger partnerships between development and security teams.
Final Thoughts
Shifting security left isn't about adding more security tools. It's about making security part of everyday software development. When SAST and SCA are integrated into CI/CD pipelines, developers receive timely feedback, security issues are identified earlier, and organizations reduce both risk and remediation costs.
Shift Left works when security fits into the way developers already work. If the process is clear, practical and focused on real risk, security becomes easier to adopt and less likely to slow delivery.