Something you can consider once you figure out who it is.
https://logmeinsupport.com/kblive/crm/selfservice/displaywh.jsp?DocId=2538
How do I block LogMeIn so my employees can't use it?
If you would like to prevent your employees from installing LogMeIn on their work computer, you should block secure.logmein.com on your firewall(s).
If you are on a Windows Domain, you may also install our Group Policy Object, which will allow you to limit access throughout your entire domain, without the need for firewall rules. Please see the link below for more information regarding our Group Policy Object.
How do I install the LogMeIn Active Directory Group Policy template (logmein.adm)?
Chris