On Thu, 2016-03-24 at 09:40 -0700, Gordon Messmer wrote:
Just to be clear: you absolutely should upgrade to a currently maintained version of MySQL.
Agreed. Its going to be rainy in England this Easter weekend, so am contemplating upgrading the last production C5 to C6.
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.
Have already upgraded my PHP routine which blocks IP addresses when GET data exceeds its acceptable field size.