Microsoft Corporation is an American multinational technology company.It develops, manufactures, licenses, supports, and sells computer software, consumer electronics, personal computers, and related services.
Microsoft's principal wrong is distributing a nonfree operating system, Microsoft Windows.That system is jam-packed with malicious functionalities, including surveillance of users, DRM, censorship and a universal back door.
Microsoft recorded users of Xboxes and had human workers listen to the recordings.
Windows 10 sends identifiable information to Microsoft, even if a user turns off its Bing search and Cortana features, and activates the privacy-protection settings
Skype contains spyware
It appears Windows 10 sends data to Microsoft about what applications are running.
DRM-restricted files can be used to identify people browsing through Tor. The vulnerability exists only if you use Windows.
Windows 10 telemetry program sends information to Microsoft about the user's computer and their use of the computer.
Microsoft forces people to give their phone number in order to be able to create an account on the company's network. On top of mistreating their users by providing nonfree software, Microsoft is tracking their lives outside the computer and violates their privacy.
Microsoft Teams are collecting user's personal and identifiable data including how long a call lasts, who's participating in the call, and the IP addresses of everyone taking part.
Windows displays intrusive ads for Microsoft products and its partners' products.
Windows 8 also has a back door for remotely deleting apps.
Microsoft has backdoored its disk encryption.
Windows 10 has keylogger
Microsoft is part of PRISM
Bing sells your search history to other spyware platforms
Microsoft is evil company and you should remove it from your life.
Sources:(https://en.wikipedia.org/wiki/Microsoft,https://privacy.microsoft.com/en-US/,https://stallman.org/microsoft.html,https://www.gnu.org/proprietary/malware-microsoft.html#content)