The advisory, which Ars couldn’t immediately confirm was authentic, touched off a tsunami of comments on Twitter and other social media sites. For than a decade, the open source and freely available TrueCrypt has been the program of choice by many security-minded people for encrypting sensitive files and even entire hard drives. Last year, amid revelations the NSA can decode large swaths of the Internet’s encrypted data, supporters ponied up large sums of money to audit TrueCrypt. Results from phase one of the audit released last month revealed no evidence of any backdoors. Additional audits were pending.
They aren’t sure if the warning is authentic or if it was posted by hackers. So, as always, take your security with a grain of salt.