I just got poked by someone not on my server? Hacker?

Hi,

I'm a bit worried. I just got poked by some random thing that isn't on my server.
I tried to ban it and I got missing required parameter. I was able to remove it from contacts though (don't know how it got there though).

I am running the following plugins:

TS3MassMover
ACRE2
Chatlog Viewer
Lua Plugin (which, after I went to settings has 'testmodule'(idk this, related?) and 'z05pmwatch'(I installed this <1 month ago)

Chatlog viewer reports the following:

<19:47:58> "Scan [fyfywka@teamid.me][144]" pokes you: Test
<19:48:43> missing required parameter
<20:04:39> missing required parameter

How is it possible that someone outside ts3 pokes me?
I must add that there two other people on my TS3 server at the time, they did not receive a poke.

I did some online research and found this sketchy site: http://ift.tt/1N2KUl5
Apparently this Russian fyfywka dude is checking worldwide for vulnerabilities?

I closed down all my ports and disabled the Lua plugin entirely.

Any advice? Anyone know about this? Is someone trying to breach computers via TeamSpeak?

Kind regards,
Sanchez

I just got poked by someone not on my server? Hacker?