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macOS User Guide
- Welcome
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- Work across devices using Continuity
- Use iPhone as a webcam
- Use iPhone with Desk View
- Stream audio and video with AirPlay
- Use one keyboard and mouse to control Mac and iPad
- Hand off between devices
- Unlock your Mac with Apple Watch
- Make and receive phone calls on your Mac
- Sync music, books, and more between devices
- Resources for your Mac
- Resources for your Apple devices
- Copyright
Malware
Malware is malicious software that includes viruses, worms, Trojan horses, and other programs that can harm your Mac or your privacy. Malware can unintentionally be installed when you open attachments in email messages and download items from websites.
Some malware is simply annoying. More often, its intent is to control your Mac to collect personal and financial information, host illegal content, send spam, or harm other computers on the network.
Avoid opening or downloading items from email messages and websites unless you’re certain that they come from a legitimate, trusted source. If you’re uncertain about the source, delete the item. You can always get it again later, after you make sure it isn’t malware.
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