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.
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.
One misparsed IP string cost Capital One 106 million records. Here's how to validate URLs in Python without repeating that mistake.
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.
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.
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.
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.
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.
React auto-escapes JSX text by default, but dangerouslySetInnerHTML, href injection, and a 500-package npm worm show where that protection stops.
Bandit ships named checks for eval, pickle, and shell=True — B307, B301, B602 — yet these three smells still slip past manual review into production Python.
Run Python with -O and every assert statement vanishes from the bytecode — including the ones guarding auth checks and input validation.
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