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Comment by bawolff

> If you had a legacy 5000 rounds or 10000 rounds, the # of rounds can't just be increased server side. Changing that would mean a new key is derived. So older users likely still have a pretty low number of pbkdf2 rounds which makes them more vulnerable to brute forcing

Kind of unclear but i think this implies that lastpass doesn't do some and reencrypt on login. Are they saying its just people who havent unlocked there vault in a decade, or are they saying all old users have this? If the latter this is really poor design.

> Lots of vault entries may be encrypted with ECB mode AES-256.

Wtf wtf wtf. This would be considered wildly insecure even by the standards of the 80s

parent bawolff 3 years ago

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