The Tails operating system is one of the most trusted platforms in cryptography, favored by Edward Snowden and booted up more than 11,000 times per day in May. But according to the security firm Exodus Intelligence, the program may not be as secure as many thought. The company says theyve discovered an undisclosed vulnerability that will let attackers deanonymize Tails computers and even execute code remotely, potentially exposing users to malware attacks. Exodus is currently working with Tails to patch the bug, and expects to hand over a full report on the exploit next week. Were hesitant to release any technical details because we dont want anyone to be able to reproduce [the exploit], Exodus co-founder Aaron Portnoy told The Verge.