Security

Copilot now takes part in more than one in five code reviews on GitHub. The research says AI reviewers earn their keep - and that the tuning which makes them usable suppressed about a fifth of real vulnerabilities on a standard benchmark.

CVE-2026-66066 lets an unauthenticated upload read server files via Active Storage. Patching Rails is not enough - libvips must go to 8.13 and secrets rotate.

Rails 7.1 got no patch for CVE-2026-66066, a CVSSv4 9.5 pre-auth RCE. How to find every app of yours on a dead branch and pick between four realistic exits.

CVSS 8.1 universal RCE chain through ERB::DeprecatedInstanceVariableProxy and Marshal.load. Detection, upgrade path, Rails 7.0/7.1 EOL options.

On April 25, 2026, an AI coding agent at PocketOS deleted the production database and its on-volume backups in 9 seconds. Here's what your dev shop should learn.

Step-by-step guide to enabling Argon2 with has_secure_password in Rails. Migrate from BCrypt with zero downtime using the Hybrid Verifier pattern in production.

Master the migration from Devise to Rails 8's built-in authentication system. Complete guide with step-by-step migration, security best practices, and production deployment strategies.

Complete enterprise guide to scaling LangChain and CrewAI from prototype to production. Covers architecture patterns, security, compliance, monitoring, and real-world case study with 80% improvement metrics.