on 11 december 2010, gregory perry, a former technical consultant for the federal bureau of investigation (fbi), emailed de raadt alleging that the fbi had paid some openbsd ex-developers 10 years prior to insert backdoors into the openbsd cryptographic framework. de raadt made the email public on 14 december by forwarding it to the openbsd-tech mailing list and suggested an audit of the ipsec codebase. de raadt's response was skeptical of the report and he invited all developers to independently review the relevant code. in the weeks that followed, bugs were fixed but no evidence of backdoors were found. de raadt stated "i believe that netsec was probably contracted to write backdoors as alleged. if those were written, i don't believe they made it into our tree. they might have been deployed as their own product."