As far as I know after a hack in bitcointalk, theymos sent email to everyone to change their password. This belongs to this feature.
Bitcointalk was hacked before? I didnt know that incident, maybe its the first email sent to all users by email. This is what Ive been looking for.
Yes, it was indeed hacked in 2015 with theymos sending similar email notification to forum users. And I guess that's one of the major use of such notification system.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
You are receiving this message because your email address is associated
with an account on bitcointalk.org. I regret to have to inform you that
some information about your account was obtained by an attacker who
successfully compromised the bitcointalk.org server. The following
information about your account was likely leaked:
- Email address
- Password hash
- Last-used IP address and registration IP address
- Secret question and a basic (not brute-force-resistant) hash of your
secret answer
- Various settings
You should immediately change your forum password and delete or change
your secret question. To do this, log into the forum, click "profile",
and then go to "account related settings".
If you used the same password on bitcointalk.org as on other sites, then
you should also immediately change your password on those other sites.
Also, if you had a secret question set, then you should assume that the
attacker now knows the answer to your secret question.
Your password was salted and hashed using sha256crypt with 7500 rounds.
This will slow down anyone trying to recover your password, but it will
not completely prevent it unless your password was extremely strong.
While nothing can ever be ruled out in these sorts of situations, I do
not believe that the attacker was able to collect any forum personal
messages.
I apologize for the inconvenience and for any trouble that this may cause.
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