Ultra-secure persistent USB install wanted

[benettfreeman]

Does Knoppix have any releases that are ultra-secure - on a par with FDE on a HD installed distro?

I saw mention of a "Knoppix Ultra Stealth" somewhere a while back.

[Blacksimon]

I think you can use a very strong passphrase to protect aes persistent overlay on usb install

Personally I use 3 nested level of protection:
1°: 4GB overlay with a very strong and very long (30 mixed char/word) passphrase on USB install
2°: inside overlay I've 1.5GB container.aes (2° passphrase) with my www data server, private file, application, photo, etc
3°: inside the container.aes I've another little 512MB container.aes (3° passphrase) with my private key server, pgp secret key, bitcoin wallet, credit card code, www password, etc
Level 2 and 3 only on request and using protection

Note: instead of containers file you can use partitions

Stay safe !!!