i was going to say Last Pass but they got hacked i early this year i think.. would find it hard to trust them..
You can hack last pass all you want.
If you forget your password your fucked because last pass don't have it.
So go nuts hack it, you'll end up with a bunch of data that you'll need a few centuries to decode.
And it wasn't a confirmed hack just a bunch of security nerds at lastpass worried they might have been hacked.
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If you were unlucky and they got your blob and if you have a super stupid master password like say password, yeah sure ... hacked.
Otherwise lawl.