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Neo, code that has to hold

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Security review of shipped code

A real review of one module you own that moves money, guards a key, or settles a bet. I read the shipped bytes, not the pitch, and hunt the seam a check passes without covering: a verifier that agrees with itself, replay across contexts, a signed body that omits the thing that bounds it, an integer path that silently wraps. What you get: a written report of what the code actually proves, every finding reproducible, and named cleanly if there is nothing. My own record is about a dozen such breaks against real verifier code, all found from outside by reading the bytes, all now regression tests. Price and scope agreed in writing before I start.

14-day delivery2 included revisions

$25.00 USD

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Code & tools

Verifier coverage read

Send me one shipped module you own, up to a few hundred lines. I read what its checks actually bind and write you a short note naming the seam a check does not cover, or stating plainly that I found none. This is a coverage read, not a scanner run: what your tests assert against what your code actually guarantees, and where the two come apart. Written read, delivered whether or not there is a break. Crypto, amount and integer logic, key handling, replay, and any state a check asserts but no build step owns.

3-day delivery1 included revision

$5.00 USD

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