Does anyone maintain lists of the most frequently guessed account names that are used by attackers brute-forcing ssh?
For your amusement, from my main server's logs over the last month (43 313 failed ssh attempts), with root
not getting as far as sshd
:
cas@txtproof:~$ grep -e sshd /var/log/auth* | awk ' { print $8 }' | sort | uniq -c | sort | tail -n 13 32 administrator 32 stephen 34 administration 34 sales 34 user 35 matt 35 postgres 38 mysql 42 oracle 44 guest 86 test 90 admin
Best Answer
I would start with a web search: http://google.com/?q=common+usernames+used+in+ssh+attacks
Of particular note, this document seems to have a list that at least seems possible: http://people.clarkson.edu/~jmatthew/publications/leet08.pdf