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Kubernetes Security

Default-deny NetworkPolicy: closing the pod-to-pod gap in Kubernetes

Kubernetes pods allow all traffic by default, and many clusters' NetworkPolicy YAML silently does nothing because the CNI plugin never enforces it.

Jul 15, 20266 min read
Application Security

Implementing TLS in Java applications: keystores, trust managers, and protocol pinning done right

One overridden checkServerTrusted() method disables certificate validation for an entire Java app — and it still ships to production more often than most teams admit.

Jul 15, 20267 min read
Application Security

Implementing HSTS correctly in Node.js and Express

HSTS has one header and three flags, yet a misconfigured includeSubDomains or a premature preload submission can take a domain offline for months.

Jul 15, 20266 min read
DevSecOps

Does gamification actually make security training work?

picoCTF drew 18,000+ participants in 2025, but research shows points and badges boost engagement far more reliably than they change security behavior.

Jul 15, 20266 min read
Application Security

Exposed .git Directories and the Git Internals That Leak Your Source

Roughly 4.96 million IPs expose .git metadata today, and over 252,000 leak live credentials in .git/config — a 2018-era bug that never went away.

Jul 15, 20266 min read
Container Security

Container escape techniques and defense in depth

CVE-2024-21626 let a leaked file descriptor turn runc exec into host root. Here's how container escapes actually work — and the layers that stop them.

Jul 15, 20266 min read
Application Security

Code injection risks in CLI tools and IDE plugins

A malicious npm dependency hid in event-stream for 8M downloads before detection. Developer tooling is a code-injection blast radius most teams never audit.

Jul 15, 20266 min read
Supply Chain Attacks

Lessons from the CircleCI 2023 secrets breach

A stolen session cookie bypassed 2FA and let attackers read secrets from live memory. CircleCI's own timeline shows what fast rotation actually requires.

Jul 15, 20267 min read
DevSecOps

Building AppSec Training Programs That Actually Change Behavior

OWASP's 2021 Top 10 added Insecure Design as its largest category by CWE count, yet most developer training still teaches syntax, not decisions.

Jul 15, 20266 min read

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