 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 previously to insert backdoors into the OpenBSD Cryptographic Framework . De Raadt made the email public on 14 December by forwarding it to the <unk> @-@ tech mailing list and suggested an audit of the <unk> 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 <unk> 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 . " 
