Bandit: Open-source tool designed to find security issues in Python code

Source: Help Net Security

Author: Sinisa Markovic

URL: https://www.helpnetsecurity.com/2026/01/21/bandit-open-source-tool-find-security-issues-python-code/

Bandit: Open-source tool designed to find security issues in Python code

ONE SENTENCE SUMMARY:

Bandit is an open-source tool that scans Python code for security issues, helping developers identify and address potential vulnerabilities.

MAIN POINTS:

  1. Bandit scans Python source code to detect security issues.
  2. It checks code against security-focused rules to identify risks.
  3. Detects issues like unsafe function use, weak cryptography, and hard-coded passwords.
  4. Each finding includes severity and confidence for prioritization.
  5. Commonly run from the command line on code repositories.
  6. Configuration is defined alongside code, often in config files.
  7. Findings can be suppressed with inline comments for accepted risks.
  8. Supports baseline reports to track findings over time.
  9. Severity and confidence thresholds assist in prioritizing findings.
  10. Maintained by PyCQA, focusing on stability and compatibility.

TAKEAWAYS:

  1. Bandit is essential for early security issue detection in Python projects.
  2. Customizable rules and configurations support automated security checks.
  3. Inline comments and baselines help manage long-term security risks.
  4. Severity and confidence metrics guide issue prioritization.
  5. Freely available on GitHub, maintained by the PyCQA community.