Insights, tutorials, and best practices for building secure applications. Learn how to prevent vulnerabilities before they become incidents.
The rules that must always hold true in your backend. When these invariants are violated, you get incidents. Here's what to check and why it matters.
Webhooks are essential for modern applications, but they come with security challenges. Learn how to implement idempotent webhook handlers to prevent replay attacks.
Time-of-check to time-of-use vulnerabilities can lead to double-spending and financial loss. Learn how to identify and prevent these subtle but critical bugs.
There are only two hard things in Computer Science: cache invalidation and naming things. But when cache invalidation fails, the security implications can be severe.
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