Are there any known vulnerabilities to Ubuntu's full disk encryption feature?
I have some storage devices (thumbdrive and a few external hard drives used for backups) that I use with full disk encryption, so that if they're lost or stolen, my data can't be retrieved. Is this a false sense of security?
If someone were to obtain an encrypted drive, would it be possible for them to break the encryption, and if so, how long would it take?
EDIT: To clarify, I'm only asking about non-bootable drives. I'm aware of vulnerabilities to encrypted drives that are still used to boot the OS.