> TrueCrypt still works and doesn't have any known vulnerabilities afaik. I second this comment. Plus TrueCrypt has passed a serious source code audit. I'm not

> TrueCrypt still works and doesn't have any known vulnerabilities afaik. I second this comment. Plus TrueCrypt has passed a serious source code audit. I'm not aware of any on-the-fly encryption system that has had the scrutiny of TrueCrypt. The main issue to be aware of is making certain you download the valid v7.1a source code or binaries. There are plenty of old trustworthy sites that have published the hashes of the source code tarballs or Windows binaries that you should check. TrueCrypt works for me without any issue on current Linux systems, but I haven't tested it on recent Windows and macOS.