FileRehab wrote:
…Likewise Macs also need Antivirus software and it may be Avira Antivirus in 2023.
macOS already contains built-in anti-malware support, with some notable updates in recent macOS versions with XProtect Remediator, and with active malware scanning, and with app notarization to identify and isolate and remediate malware.
Backups are as or more important, too. Usually Time Machine, though there are other options. One of the very few ways to mark data as being important and valuable is with backups. Yet more valuable data gets multiple backups, and rotating and variously offsite backups. No good backups means no good recovery.
Biggest security issue in recent years (past lack of backups) tends to be adware—apps that the user specifically installs that themselves contain advertising or more—and phishing and related, “cracked” apps, and password re-use and such. Some of the add-on security apps quite commonly present questionable ads and pop-ups, such as the “your {it’s already public info} is posted on the dark web!” silliness.
Add-on security? No panacea here. This because some well-known add-on security apps have been known to sell personal data, and others to leak data, and to lie about their security and/or their logging practices, or to “fix” problems that haven’t existing for a decade or so, and other add-on security apps have had hilariously bad and insecure designs.
Reposting links from earlier:
Recognize and avoid phishing messages, phony support calls, and other scams - Apple Support
Effective defenses against malware and other threats - Apple Community