Code Scanning: How to Detect Bugs and Code Quality Issues

Code scanning is an umbrella term for automated inspection of source or artifacts. This article separates static quality scans, security-focused SAST, dependency scanning, secret scanning, and dynamic testing — and explains triage, remediation, and re-scanning.

Video explainer (1:26) · Watch with transcript

Types of scanning

  • Static application security testing (SAST) — source patterns for vulnerabilities
  • General static analysis — bugs, smells, complexity, maintainability
  • Dependency scanning — known CVEs in packages (e.g. Dependabot alerts)
  • Secret scanning — committed tokens and keys
  • Dynamic testing (DAST) — running application probes — different phase than static scans

Scanning pull requests vs full repositories

PR scans focus on diffs for fast feedback. Full-repository scans baseline legacy debt and find issues in unmodified files. Teams often use both.

Triage and remediation workflow

  1. Run scan and export or view severity-ranked findings
  2. Assign owners for Critical and High items
  3. Fix or document justified suppressions
  4. Re-scan to verify closure
  5. Track trend over scan history

False positives

Tune rules, baseline legacy issues, and require human confirmation before blocking releases on noisy checks.

Where CodeInspector fits

CodeInspector supports full-repo scanning with PDF reports and history by scanning GitHub repositories (public URL or connected private repos via GitHub OAuth) with rule-based static analysis for C#, Java, JavaScript, TypeScript, and C++. Findings include severity, file context, recommendations, and suggested fixes where available; PDF reports and scan history help teams track remediation. Explorer includes Gemini chat to discuss findings — it assists investigation, not autonomous code review. Python, Go, and PHP are listed as coming soon on the About page. Evaluate at https://codeinspector.app with starter credits for new accounts.

Frequently asked questions

Does one scan find all vulnerabilities? — No; layer multiple techniques.

Is code scanning the same as code review? — Complementary.

Conclusion

Treat code scanning as a loop: scan, triage, fix, re-scan. CodeInspector targets repository static analysis for supported languages on GitHub — use it alongside dependency and secret tooling.

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