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Software engineering by Michael Douglas.
Elixir/OTP, Ruby, Go, security and distributed systems.

Featured

The webhook that reads the cloud's metadata

9/7/2026

SSRF isn't solved by cleaning up the input, it's solved by controlling the output, in order of effectiveness

26 min read

BOLA is not an authentication bug

9/6/2026

Authentication is the door, object-level authorization is the lock on every drawer, most systems lock the door with great care and leave the drawers open

32 min read

Split payment is not a VARCHAR problem

7/31/2026

The PSP is the one who withholds, you're left with the hard part

27 min read

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