Abuse
Support scam
TeamViewer and similar programs can be abused for Technical support scams. In this process, attackers pretend to be employees of well-known companies to gain control over their victims' computers. They then use a pretext to obtain money from their victims. For this reason, the British Internet provider TalkTalk temporarily blocked the software's data traffic. TeamViewer condemns all forms of misuse of the software constantly improves the product in this respect, provides tips for safe use, and investigates corresponding incidents.
Account access
In June 2016, hundreds of TeamViewer users reported having their computers accessed by an unauthorized address in China and bank accounts misappropriated. TeamViewer attributed the outcome to user's "careless password use" and denied all responsibility, saying "neither was TeamViewer hacked nor is there a security hole, TeamViewer is safe to use and has proper security measures in place. Our evidence points to careless use as the cause of the reported issue, a few extra steps will prevent potential abuse."
Adult services
In July 2018, The Register reported the widespread use of TeamViewer in the BDSM scene, following the observation that many posts on Twitter exist where these kinds of services are offered.