On Thu, Mar 24, 2016 at 9:08 AM, Always Learning <centos at u64.u22.net> wrote: >> I can't stress enough, mysql-5.0 on el5 is absolutely not updated >> security wise. > > Thanks. Reading it now. Just to be clear: you absolutely should upgrade to a currently maintained version of MySQL. However, upgrading will not protect you from SQL injection attacks. The probes you're seeing aren't targeting the SQL server. They're targeting your php code.