Nope, Teamviewer is the tool, not the source
Sorry folks, but people are confusing things and being really quick to point the finger...
a Windows Trojan disguised as an Adobe Flash update that's doing the rounds using TeamViewer to backdoor machines.
That's the point of entry, not TeamViewer. These people have been infected with a trojan. Teamviewer is a prolific tool, and once a computer is infected then they simply acquire the ID and PASSWORD from the local software... AND AWAAAAY WE GO!
Again, to repeat, you people have been infected with a trojan, it's not teamviewer at fault here!