If an employer installs time- or attendance-tracking software on your computer, that software can probably spy on you in lots of other ways as well.

A new study by the resume-help site StandOut CV compared the data collection features in 32 of the most popular employee monitoring tools. The group found that 75% of these tools can record employees’ screens and monitor which apps or websites they’re using, while 59% can monitor keyboard and mouse movements. Nearly half of those tools can run in a stealth mode, allowing employers to deploy the software on company-owned computers without workers’ knowledge.

The companies behind this software—including Hubstaff, Time Doctor, Teramind, and Interguard—say their businesses have boomed during the pandemic. StandOut CV’s study quantifies just how invasive this software has become across the board as vendors compete to offer the most comprehensive monitoring features.

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