A colleague noticed about 2 weeks ago that instead of 10 or so hosts in his list on the teamviewer website had suddenly grown to 600+ hosts - I witnessed this,

A colleague noticed about 2 weeks ago that instead of 10 or so hosts in his list on the teamviewer website had suddenly grown to 600+ hosts - I witnessed this, and told him he should contact teamviewer. Shortly after this someone tried to take control of his brother's machine. We use teamviewer host and haven't seen anyone trying to log in, but I'd rather not take the chance and have removed the software from all our machines. If we need to remote assist someone, they can run the software manually. Having the ability to remote connect and repair problems is great, but when there is the remotest (pun intended) chance that it can be used nefariously then I'd rather limit the threat.