They weren't encrypted. They were 160-bit unsalted SHA-1 hashes.

On Wed, Jun 13, 2012 at 9:33 PM, RussellMc <apptechnz@gmail.com> wrote:

> Pardon me Sir, Did you see what happened ...?
> "Hackers" stole at least 1.6 million ENCRYPTED LinkedIn passwords.
> If you used passwords like "123456" or "password"  you are already
> toast. Proceed anyway. The others they are trying to decrypt. Knowing
> who you are makes this easier.
> There may be many more than 1.6M addresses as it depends how many used
> very poor passwords. Min should be OK, it's  ............... :-)
>
>
--=20
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