Hackers are using remote-control software Teamviewer to hijack PCs and drain PayPal accounts

Teamviewer, a piece of software that people can use to remote-control PCs, appears to have been hacked. Numerous user reports have indicated that unknown third parties are taking control of PCs and trying to steal money, through services like PayPal or eBay. Needless to say, this looks bad. Teamviewer has denied the allegations, but something's definitely going on. Dozens of Reddit users are flooding the /r/teamviewer forum looking for advice, and one of my personal friends asked my advice after...