But it's also a sign of something that I and many others have warned about for years. The Mac isn't immune; it's just resistent. Its minority share of the computer marketplace, coupled with rapid upgrades by most owners to newer versions of the operating system, haven't made it profitable enough. That may have changed, and it may become more routine to see malware of the kind that requires our involvement to install.
If you want some advice to give others, here are the salient takeaways:
- Never download software from any site but that of the software developer who created it.
- Keep OS X El Capitan and earlier releases' Gatekeeper set to only launch Mac App Store downloads and those by identified app developers.
- Never right-click an app that won't open. If you do, don't bypass the warning that it's from an unknown developer.
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