It will run better the less you tinker with it. Your Mac doesn’t need any "clean-up" software: Ad blockers are very useful, but have to be regularly updated and double-checked to make sure they haven’t been taken over by advertisers.
If you think you may have installed some adware, run EtreCheck. Avoid adware:Īnother modern Mac epidemic is adware.
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If you do need to install an Adobe Flash update, go to the Adobe site yourself and download the update. Again, clicking the Cancel button is always a safe choice.
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Other pop-ups: From time to time, your Mac may display other kinds of pop-ups asking you to install some software or provide your password.
If you are concerned about security, keep all sharing services off. The firewall on your Mac is a marketing gimmick. Firewalls are tools for network administrators. Important: A Firewall will not protect you if sharing is turned on. If you really need them, you can turn them on at home, but they should always be off when in public at a library, school, or coffeeshop. Next, go to System Preferences > Sharing and make sure all sharing services are turned off. Clicking the Cancel button is always a safe choice. Even with this setting, you will still have to confirm the installation of any software downloaded from the internet. Go to System Preferences > Security & Privacy > General and make sure the setting Allow apps downloaded from: is set to Mac App Store and identified developers. The most important security feature on Macs is Gatekeeper.