TrueCrypt was once the most popular disk encryption software, however that all changed in May 2014 of last year when it was announced that TrueCrypt would be no more. Users who visited their website were met with a sketchy message saying “Using TrueCrypt is not secure as it may contain unfixed security issues”. They were also told that all future development of TrueCrypt has ended. It seemed like such an abrupt end to a product used by millions. Speculations went wild with people suggesting things like the creator was approached by the NSA, a code audit revealed massive security holes, or just that the creator was done working on it and wanted to move on. Whatever the reason, it left people looking for alternatives.
Alternatives – Standalone 3rd Party Software
Alternatives – Built Into OS
Virtual Disk Encryption
Please note that encrypting your disk can negatively affect your computer’s performance. It can increase CPU usage and decrease Disk I/O causing a slowdown. You will have to weigh the pros and cons to whether a slight performance hit is worth the added security.