Application Security
In-depth guides and analysis on application security from the Safeguard engineering team.
490 articles
IAST vs SAST in 2026: When to Use Which
A practical guide to when IAST adds value over SAST in 2026, with the workload characteristics that justify the operational cost of runtime instrumentation.
FastAPI Security Best Practices
Securing FastAPI applications with Pydantic validation, OAuth2 integration, and dependency injection patterns.
Reachability Analysis for Python and pip in 2026
Python reachability is hard but useful: dynamic dispatch, monkey-patching, optional extras, and how modern tools handle real Django and FastAPI services.
Next.js Security Hardening Guide
Harden your Next.js application with secure headers, API route protection, and server component safety practices.
SAST Tool Accuracy Benchmarks 2024: What the Data Actually Shows
Static Application Security Testing tools vary dramatically in accuracy. We analyze detection rates, false positive rates, and language coverage across leading SAST tools using standardized benchmarks.
GraphQL Injection Prevention: Securing Your API Layer
GraphQL's flexible query language introduces injection risks that differ fundamentally from REST APIs. Preventing GraphQL injection requires understanding the query parser, resolver chain, and schema design.
WebSocket Security in Modern Applications
WebSockets enable real-time communication but introduce attack surfaces that traditional HTTP security controls miss entirely.
Prototype Pollution in JavaScript: Prevention Guide
Prototype pollution lets attackers modify the behavior of all JavaScript objects by injecting properties into Object.prototype. This guide covers exploitation techniques, real-world impact, and layered defenses.
CodeQL vs Semgrep: A 2026 Buyer Comparison
A practical head-to-head between CodeQL and Semgrep in 2026: query power, performance, rule authoring, and where each tool earns its place in a modern SAST program.
VS Code Extensions and Supply Chain Risk in 2026
VS Code extensions run with full editor privileges and broad filesystem access. A look at the real attacks, the marketplace's blind spots, and how to harden the workstation.
IAST vs RASP: A Decision Tree for 2026
When to deploy IAST, when to deploy RASP, and when to skip both. A pragmatic decision tree based on application architecture, threat model, and operational maturity.
YAML Deserialization Attacks: The Config File That Runs Code
YAML's type system allows object instantiation during parsing. In many languages, this means a YAML file can execute arbitrary code.
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