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Microsoft built a solution right into its Windows 10 operating system that is good for a quick overview of what is going on as it reveals network activity for all apps and programs that ran on the computer in the past 30-days. While you can use all sorts of programs for that, from the built-in Windows Firewall which reveals if a program requests Internet connection access over third-party solutions like the excellent NetBalancer, Networx or Free Process-Traffic Monitor to hardware-based solutions. Monitoring network activity can be a complicated, tedious process, but it is also essential in finding out which programs connect to the Internet, and how much data they upload or download in the process.
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