Using TrueCrypt to keep your files secure? Well, time to switch to some other cryptography software. The TrueCrypt website now warns users that the software has been discontinued, is "not secure," and should only be downloaded by users migrating data away from the program:
WARNING: Using TrueCrypt is not secure as it may contain unfixed security issues
This page exists only to help migrate existing data encrypted by TrueCrypt.
The development of TrueCrypt was ended in 5/2014 after Microsoft terminated support of Windows XP. Windows 8/7/Vista and later offer integrated support for encrypted disks and virtual disk images. Such integrated support is also available on other platforms (click here for more information). You should migrate any data encrypted by TrueCrypt to encrypted disks or virtual disk images supported on your platform.
The website also includes a brief tutorial illustrating how to use BitLocker, Windows' built-in drive encryption feature, and it links to a new, read-only version of TrueCrypt laden with warnings.
As Ars Technica reports, it's not clear exactly what prompted this change. Ars points out that the software was audited for NSA backdoors earlier this year, but no backdoors were found. Also, the new, read-only version of TrueCrypt is signed with the official TrueCrypt key, which suggests the change isn't a hoax. Hmm.
For what it's worth, only the Pro and Enterprise editions of Windows 8.1 feature BitLocker. You can upgrade from 8.1 to 8.1 Pro by following the instructions on this page or by purchasing the Windows 8.1 Pro Pack here on the Microsoft Store. Either way, the upgrade costs $99.99.