Shift-Left Security
What is Shift-Left Security?
Shift-Left SecurityThe practice of moving security activities earlier in the software lifecycle so vulnerabilities are found and fixed before code reaches production.
Shift-left security argues that defects, including security defects, are cheaper to fix the closer they are caught to where they were introduced. Concretely, it means embedding threat modeling in design reviews, running SAST and SCA in the IDE and on every pull request, scanning Infrastructure-as-Code before apply, and validating dependencies and container images at build time. It complements — not replaces — runtime defenses; it simply reduces the volume and severity of issues that ever reach those defenses. Successful shift-left depends on fast, accurate tooling, good developer experience and clear ownership so security feedback does not become noise.
● Examples
- 01
Adding a Semgrep pre-commit hook so developers see findings before pushing.
- 02
Running Checkov against Terraform in CI to block insecure cloud configurations.
● Frequently asked questions
What is Shift-Left Security?
The practice of moving security activities earlier in the software lifecycle so vulnerabilities are found and fixed before code reaches production. It belongs to the Application Security category of cybersecurity.
What does Shift-Left Security mean?
The practice of moving security activities earlier in the software lifecycle so vulnerabilities are found and fixed before code reaches production.
How do you defend against Shift-Left Security?
Defences for Shift-Left Security typically combine technical controls and operational practices, as detailed in the full definition above.
What are other names for Shift-Left Security?
Common alternative names include: Shift left, Early security testing.