The security researcher Eric Daigle discovered a commercial spyware app, called pcTattletale, on the check-in systems of at least three Wyndham hotels across the US, TechCrunch first reported. Parents often use the app to monitor their children’s online activities or by employers to keep track of employee productivity and internet usage.

Daigle discovered the commercial surveillance software on the hotel check-in systems while investigating consumer-grade spyware (aka stalkerware).

pcTattletale is a software program designed for monitoring and recording the activities of computer users.
The software was used by someone to capture screenshots of the hotel booking systems, including guest details. Daigle also discovered a vulnerability in the monitoring software that allows anyone to access the screenshots taken by the app.