Hacking Tool Found

Hi Admin,

I was realy looking forward to joining your server today but i cant seem to connect.

i get to the login screen and my name and password are accepted, then when i get to the server select screen and select the server i get a pop up that ive never seen before, it says "a hacking tool has been detected please shut down the hacking programe to continue playing,
like WTF?

im a noob on computers as it is let alone know how to hack something, please can you do something or maybe tell me if i have something on my pc your server has detected that i need to remove coz im lost and have no idea what to do

Thanks guys

DigitalSoldier