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Snyk Developer Security Platform

Snyk finds and fixes vulnerabilities in code, dependencies, containers, and infrastructure as code. Learn how to integrate Snyk into your development workflow.

Luca BertonMarch 8, 20262 min read

Security scanning that only runs in CI is too late. Developers have already committed the code, opened the PR, and context-switched to another task. Snyk shifts security left by scanning in the IDE, in the CLI, and in CI — catching vulnerabilities where they are cheapest to fix.

Four Scanning Surfaces

1. Open Source Dependencies

bash
# Scan project dependencies
snyk test

Testing /app...
āœ— High severity vulnerability found in lodash
  Description: Prototype Pollution
  Introduced through: lodash@4.17.20
  Fix: Upgrade to lodash@4.17.21

Snyk scans package.json, requirements.txt, pom.xml, go.mod, Gemfile, and 30+ other manifest formats.

2. Container Images

bash
snyk container test myorg/app:latest

āœ— Critical vulnerability in openssl (CVE-2024-XXXX)
  Base image: node:20-slim
  Fix: Rebuild with node:20.11.1-slim

Snyk recommends specific base image upgrades — not just "update openssl" but "use this exact image tag."

3. Infrastructure as Code

bash
snyk iac test ./terraform/

Issue: S3 bucket without encryption
  Path: terraform/storage.tf > aws_s3_bucket.data
  Fix: Add server_side_encryption_configuration block

Scans Terraform, CloudFormation, Kubernetes manifests, and Helm charts.

4. Code (SAST)

bash
snyk code test

āœ— High: SQL Injection
  Path: src/db/queries.ts, line 42
  Fix: Use parameterized queries instead of string concatenation

Static analysis that finds security issues in your application code.

IDE Integration

Install the Snyk extension for VS Code, IntelliJ, or WebStorm. Vulnerabilities appear as you type:

typescript
// VS Code shows inline warning:
// āš ļø SQL Injection: User input used directly in query
const result = await db.query(`SELECT * FROM users WHERE id = '${userId}'`);

// Suggested fix:
const result = await db.query('SELECT * FROM users WHERE id = $1', [userId]);
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CI/CD Integration

GitHub Actions

yaml
jobs:
  security:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      
      - name: Snyk Open Source
        uses: snyk/actions/node@master
        env:
          SNYK_TOKEN: ${{ secrets.SNYK_TOKEN }}
      
      - name: Snyk Container
        uses: snyk/actions/docker@master
        env:
          SNYK_TOKEN: ${{ secrets.SNYK_TOKEN }}
        with:
          image: myorg/app:${{ github.sha }}
      
      - name: Snyk IaC
        uses: snyk/actions/iac@master
        env:
          SNYK_TOKEN: ${{ secrets.SNYK_TOKEN }}
        with:
          args: --report

PR Comments

Snyk comments directly on PRs with vulnerability details:

markdown
## Snyk Security Report

### New Issues
šŸ”“ **High**: Prototype Pollution in `lodash@4.17.20`
   Fix: `npm install lodash@4.17.21`

### Fixed Issues  
āœ… Removed vulnerable `minimist@1.2.5`

Monitoring and Alerting

bash
# Monitor a project for new vulnerabilities
snyk monitor

# Snyk will email you when new CVEs affect your dependencies

Snyk continuously monitors your project against new CVE disclosures. A dependency that was safe yesterday might be vulnerable today.

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Fix PRs

Snyk can automatically open PRs that fix vulnerabilities:

  1. New CVE discovered in express@4.18.2
  2. Snyk opens a PR: "Upgrade express from 4.18.2 to 4.18.3"
  3. PR includes changelog and test results
  4. You review and merge

No manual dependency hunting.

Snyk vs Trivy

FeatureSnykTrivy
PriceFree tier + paidFree
IDE integrationYesNo
Auto-fix PRsYesNo
SAST (code)YesLimited
MonitoringContinuousOn-demand
IaC scanningYesYes
Container scanningYesYes
Developer experiencePolishedCLI-focused

Use Snyk for developer-facing security with IDE integration, auto-fix PRs, and continuous monitoring. Use Trivy for CI-only scanning where cost matters and CLI is sufficient.

Many organizations use both: Trivy in CI as a gate, Snyk in developer workflows for the developer experience.

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Luca Berton

Docker Captain, IT automation expert, Red Hat Summit & KubeCon speaker. Building hands-on education for DevOps engineers at CopyPasteLearn.

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