Application Security
Reverse shell attack mechanics and detection
Reverse shells flip the direction of the connection so outbound firewall rules never fire — here is how they work and the signals that catch them anyway.
Jul 11, 20266 min read
Resources
Supply Chain Security, in plain English.
Deep dives, practical guides, and incident analyses from engineers who build Safeguard. No fluff, no vendor FUD — just what you need to ship secure software.
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Bundler dependency resolution and safe Gemfile upgrade strategies
In May 2026 RubyGems suspended new signups after attackers mass-created accounts to flood the registry with malicious gems. Here's how Bundler actually resolves risk.
Jul 11, 20266 min read
Supply Chain Attacks
How malicious Gemfile.lock entries redirect Ruby installs to attacker servers
A single unreviewed remote: line in Gemfile.lock can silently reroute a bundle install — here's how Ruby lockfile injection works and how to stop it.
Jul 11, 20266 min read
Product
Safeguard Is Now in Your Browser: the Chrome Extension Is Live
One click on the Chrome Web Store puts Griffin AI search in a side panel next to any tab — one permission, no host access, no data collection, under 8 KiB. Here's what it does and why we built it so small.
Jul 11, 20263 min read
DevSecOps
Hardening a Java build pipeline in GitHub Actions
23,000+ repos leaked CI secrets when tj-actions/changed-files was hijacked in March 2025. Here's how to pin, OIDC, and sign a Java pipeline against that.
Jul 11, 20266 min read
Application Security
Robust URL Validation in Python: Stopping SSRF and Open Redirects
One misparsed IP string cost Capital One 106 million records. Here's how to validate URLs in Python without repeating that mistake.
Jul 11, 20266 min read
Application Security
Building an authenticated, TLS-secured WebSocket server in Python
WebSockets skip same-origin checks by default — CWE-1385 exists because of it. Here's how to build one in Python with origin checks, TLS, and rate limits.
Jul 11, 20266 min read
Container Security
Hardening PHP-FPM and Apache Container Images
PHP containers ship with defaults built for compatibility, not security. Opcache settings, disabled functions, and process ownership close the gaps.
Jul 11, 20266 min read
DevSecOps
Where Security Gates Belong in Your CI/CD Pipeline
23.8 million secrets leaked on public GitHub in 2024 alone. The fix isn't more scanners — it's putting the right gate at the right stage and tuning out the noise.
Jul 11, 20267 min read
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