Security testing guides — vulnerability scanning, penetration testing basics, and secure SDLC practices.
Testing
OSS-Fuzz is Google's free continuous fuzzing service for open source software. Once integrated, your project gets fuzzed 24/7 on Google's infrastructure using libFuzzer, AFL++, and Honggfuzz. Crashes are automatically deduplicated, tracked, and reported. As of 2024, OSS-Fuzz has found over 10,000 vulnerabilities in 1,
Testing
libFuzzer is LLVM's in-process, coverage-guided fuzzing engine. Unlike AFL which forks a new process per input, libFuzzer runs inside the target process. This eliminates process spawn overhead and can achieve orders of magnitude more executions per second for code with fast parsing paths. libFuzzer is built into LLVM/
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: apt-get install
gRPC
gRPC security testing is often skipped because certificates are annoying to set up in test environments. That's exactly why certificate misconfigurations, expired credentials, and bypass vulnerabilities make it to production. This guide covers practical approaches to testing gRPC TLS and authentication without making your CI pipeline miserable. What
Chaos Engineering
Traditional chaos engineering focuses on infrastructure failure: pods terminating, networks degrading, databases slowing down. Security chaos engineering extends this to adversarial conditions: authentication systems under attack, authorization bypasses attempted, API rate limits hammered. The question isn't just "does the system survive?" — it's "does
Security Testing
OpenFGA (Fine-Grained Authorization) is an open-source authorization system developed by Okta, based on Google Zanzibar. It lets you define relationship-based access control (ReBAC) models — "user X has role Y on resource Z" — and check them at runtime. It's the engine behind Auth0's FGA product
Shift-Left Testing
The average data breach costs $4.45 million. The average time to identify one is 204 days. Both numbers drop dramatically when security testing moves earlier in development — a practice called shift-left security or DevSecOps. This guide covers how to integrate security testing into your development workflow so vulnerabilities are
Testing
Testing data isolation in multi-tenant microservices is a security-critical requirement that most teams under-test. A failure in tenant isolation — where tenant A can read or modify tenant B's data — is not just a bug. It is a data breach. It triggers regulatory notification requirements under GDPR, SOC 2,
AI Testing
Deploying an LLM-powered application without safety testing is shipping code without security review. The risks are concrete: users manipulating your model to bypass restrictions, prompt injection attacks that hijack agent behavior, unintended leakage of system prompts or training data, and content policy violations that create legal or reputational exposure. This
Testing
SQL injection has been on the OWASP Top 10 for over a decade, and for good reason. A single SQLi vulnerability can expose an entire database — user records, payment data, passwords, internal configuration — to an attacker who knows nothing about your application beyond its login page. Despite widespread awareness, SQL
Testing
Cross-site scripting (XSS) is one of the most common vulnerabilities found in web applications. Despite being well understood and easy to prevent, XSS consistently appears in bug bounty reports, security assessments, and breach postmortems. An XSS vulnerability lets an attacker execute arbitrary JavaScript in a victim's browser — stealing
Testing
Security testing is not optional. The OWASP Top 10 is the industry-standard reference for the most critical web application security risks, updated regularly based on real-world breach data. If your application has not been tested against every category in this list, it has not been security tested. This guide walks