Since most files aren’t active in safe mode, malicious programs are easier to remove. Then, reboot your computer in safe mode (hold the Shift key when the Apple logo appears) so you can run only mission-critical programs while you resolve the issue. The first thing you should do is to disconnect your device from the internet to prevent malware from spreading and making it vulnerable to hackers. Minimize the threatĬontainment is the top priority when your Mac is hit with malware. If this ever happens, you must be able to remove the malware quickly before the infection gets worse. Malicious programs that appear like harmless files or apps can infect your computer and cause it to slow down to a crawl. Macs may be heralded as more secure than their competitors, but they too can be hacked.