: Hackers use automated bots to test these 99,000 combinations against popular websites. Because many users reuse passwords, a leak from a small forum can lead to a takeover of a bank or primary email account.
: Organizations should proactively check their user databases against known combolists to force password resets for matched accounts.
: Users should use unique, complex passwords for every service to ensure that a leak in one "combolist" does not jeopardize other accounts. 99K COMBOLIST EUROPE MIX.txt
: This is the most effective defense. Even if a password from this list is correct, the attacker cannot gain access without the second factor.