Security testing guides — vulnerability scanning, penetration testing basics, and secure SDLC practices.
Fuzz Testing
Fuzz testing (fuzzing) automatically generates random, malformed, or unexpected inputs and feeds them to your program looking for crashes, hangs, memory corruption, and assertion violations. Modern coverage-guided fuzzers like AFL++ and LibFuzzer generate millions of test cases per second guided by code coverage feedback and have found thousands of
Security Testing
Penetration testing at scale requires the right toolset. Even experienced security professionals who rely heavily on manual testing use automated tools to accelerate reconnaissance, identify low-hanging fruit, and validate findings. The difference between a skilled tester and a script kiddie isn't whether they use automated tools — it&
Security Testing
Container security is different from traditional application security.
Fuzz Testing
Basic AFL++ usage — compile with afl-clang-fast, create a seed corpus, run afl-fuzz — finds bugs.
Security Testing
Every security tool your team buys or builds generates findings. The critical design question isn't "what findings does this tool produce" — it's "what happens when it finds something?" Without a deliberate gate design, you end up in one of two failure modes:
Security Testing
A complete AppSec pipeline combines three layers: SAST (static analysis of source code), SCA (vulnerable dependency scanning), and DAST (dynamic testing of the running app). Each layer catches different vulnerabilities. This guide shows you how to wire all three into a CI/CD pipeline, where to place each gate, and
AFL++
AFL++ (American Fuzzy Lop++) is the most widely used coverage-guided fuzzer for C and C++ programs. It instruments your binary at compile time to track code coverage, then mutates inputs guided by that coverage to explore your program's logic exhaustively. Used by Google, Mozilla, and security researchers
Testing
OSS-Fuzz is Google's free continuous fuzzing service for open source software.
Testing
AFL++ is the most widely used coverage-guided fuzzer. It's responsible for finding thousands of CVEs in real-world software — in image parsers, network libraries, file format handlers, and more. This tutorial walks through everything you need to go from installation to finding actual bugs. Installation Ubuntu/Debian:
gRPC
gRPC security testing is often skipped because certificates are annoying to set up in test environments.
Chaos Engineering
Traditional chaos engineering focuses on infrastructure failure: pods terminating, networks degrading, databases slowing down.
Security Testing
OpenFGA (Fine-Grained Authorization) is an open-source authorization system developed by Okta, based on Google Zanzibar.