Guillermo Larregay

Summary: Trail of Bits published a September 18, 2025 post by Guillermo Larregay describing mutation testing, which introduces bugs into code systematically to check whether a test suite catches them. The post recommends blockchain developers use the technique to measure test suite effectiveness and find bugs traditional testing can miss.
Why it matters: A test suite that passes tells you nothing about the bugs it never probed; mutation testing is the measure of that blind spot, and the post points it at blockchain contracts where missed bugs carry direct financial exposure.

Read the original at Trail of Bits Blog ↗