Multibit security with regards to "backup" folders I'm using the MultiBit client to manage my wallet (right here on my computer), but I am concerned about the security with regards to the *-backup folders that it creates automatically.

When I inspect the wallet-unenc-backup directory, I find 2 pairs of .info and .wallet.cipher files. Using a text editor, I can see that the .info file only contains my public bitcoin address and a line referring to the rolling-backup directory and some other numbers. The .wallet.cipher file shows weird characters.

Does the .wallet.cipher file contain a private key unencrypted? If so, why does the client not warn me about this? Is it because its users are expected to know this, or am I wrong about this?

The other folders contain .info files as well, and .wallet files (probably and encrypted wallet).

Any clarification on the actual information stored in these files and whether that information is encrypted would be helpful.

I did read the documentation of MultiBit, but their description of these files, found here, isn't very clear and doesn't contain warnings where I expect them to be.

EDIT:
I have put a password on my wallet using the "file" menu in MultiBit.
The files with the .cipher suffix are the regular wallets encrypted with 256 bit AES.

The password used is the one you use to first encrypt your wallet. MultiBit goes through all the unencrypted wallets, creates an encrypted copy and secure deletes the unencrypted one.

You can open the .cipher wallets using File | Open wallet and it asks you for the password.