Jan 26 11:26:35 arrakis sshd[2515]: pam_unix(ssh:auth): authentication failure; logname= uid=0 euid=0 tty=ssh ruser= rhost=my-debian.org Jan 26 11:26:38 arrakis sshd[2515]: Failed password for invalid user myra from 88.151.100.103 port 53744 ssh2
Note the rhost in the first line: my-debian.org. And, indeed:
% host my-debian.org my-debian.org has address 88.151.100.103
Whois tells me:
Registrant ID:DI_6983786 Registrant Name:Czibulya Gergely
LART, anyone ?