server been up 1 days, 14 hours, 47 minutes and 50 seconds Connections ø per hour% max. concurrent connections4--- --- Failed attempts324 8.35 1.68% Aborted000% Total 324 failed in about 1.5days its way too high, its just happened recently without me changing anything. Maybe more traffic coming in or is it hackers? any way to check, i do log errors to var/log\mysqld.log recently i seen lots of IP addressed from other site not mine being logged there with some errors like hostame could not be resolved etc..
Do you have a separate firewall that prevents connections to the database? It sounds like the database is available publicly. This might be a good place to start: http://www.mysqlperformanceblog.com/2012/12/28/auditing-login-attempts-in-mysql/ If you have control over the server, I would block mysql's port to all external traffic unless they are specifically allowed to connect.