Hacker attempting to access valid email acounts

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swanzey
Posts: 9
Joined: Wed Mar 21, 2007 2:23 pm

Hacker attempting to access valid email acounts

Post by swanzey » Fri Nov 22, 2019 2:26 pm

I have an ip address that is specifically applying valid email addresses and attempting to login but failing because of incorrect passwords.

Usually a hacker just tries any and all email addresses, but this one is using only valid email addresses consistently.

How (and) can someone obtain a list of email addresses, but not have passwords, then try to hack each account one at a time? I understand there is a chance this person got someone's 'address book' but this is doubtful.

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