api-security
Safeguard articles tagged "api-security" — guides, analysis, and best practices for software supply chain and application security.
100 articles
Securing gRPC APIs: mTLS, Interceptors, and Input Validation
CVE-2023-44487 knocked grpc-go services offline with a Rapid Reset flood — a reminder that gRPC ships fast, insecure by default, and needs hardening at every layer.
A primer on the OWASP API Security Top 10 and how to test for it
The OWASP API Security Top 10 dropped Injection entirely in its 2023 update and added SSRF — most REST and GraphQL teams still test for the old list.
Hidden Functionality and Undocumented API Endpoints
Undocumented API endpoints and hidden functionality sit outside vendor documentation entirely — here's where they come from, why attackers find them first, and how to detect them.
Missing Rate Limiting on APIs and Login Endpoints
Missing rate limiting turned single APIs into 37-million-record breaches at T-Mobile and Optus. Here's why it happens, how attackers exploit it, and how to catch it first.
CORS Misconfiguration Vulnerabilities
CORS misconfiguration vulnerabilities let attackers steal authenticated API data with a single reflected Origin header. Here's how they happen and how to catch them before release.
Best API Security Tools in 2026: An Honest Buyer's Guide
A balanced 2026 comparison of the leading API security tools — Salt Security, Akamai API Security, Traceable, 42Crunch, Wallarm, and StackHawk — with an honest look at where Safeguard fits.
API Authentication Best Practices (2026)
How you authenticate API clients decides how bad a leaked credential gets. Here is how to choose and harden API keys, bearer tokens, JWTs, and mTLS in 2026.
Verifying webhook signatures correctly
Stripe gives you a 5-minute replay window and GitHub a raw-body HMAC — but most outages trace back to one bug: verifying JSON after it's been re-serialized.
A practical REST API hardening checklist
OWASP's 2023 API Security Top 10 still ranks broken object-level authorization as the #1 risk — here's a concrete checklist for authn, rate limiting, and input validation.
The Security Implications of Misconfigured CORS in Node.js APIs
One line of Express middleware — reflecting Origin back with credentials: true — turns CORS from a browser protection into an authenticated data-exfiltration channel.
REST API Security Best Practices: The OWASP API Top 10 in Practice
Most API breaches aren't exotic — they're broken object-level authorization and missing rate limits. A practical walk through the OWASP API Security Top 10.
GraphQL API Security: Introspection, Depth Limits, and Authorization
GraphQL's flexibility is its attack surface. Nested queries, introspection, and per-field authorization all fail differently than REST. Here's how to secure them.
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