TL;DR Shielder, with OSTIF and Amazon Web Services, performed a Security Audit on a subset of the Boost C++ libraries. The audit resulted in five (5) findings ranging from low to medium severity plus two (2) informative notices. The Boost maintainers of the affected libraries addressed some of the issues, while some other were acknowledged as accepted risks. Today, we are publishing the full report in our dedicated repository. Introduction In December 2023, Shielder was hired to perform a Security Audit of Boost, a set of free peer-reviewed portable C++ source libraries.