![]() ![]() That means, in practice, that you never use software that comes from an untrustworthy source, or that does something inherently untrustworthy. If you're smarter than he thinks you are, you'll win. The threat therefore amounts to a battle of wits between you and the malware attacker. With the possible exception of Java exploits, all known malware circulating on the Internet that affects a fully-updated installation of OS X 10.6 or later takes the form of so-called "trojan horses," which can only have an effect if the victim is duped into running them. The first and best line of defense is always your own intelligence. XProtect, Gatekeeper, and MRT reduce the risk of malware attack, but they're not absolute protection. It notifies you if it finds malware, but otherwise there's no user interface to MRT. It checks for, and removes, malware that may have evaded the other protections via a Java exploit (see below.) MRT also runs when you install or update the Apple-supplied Java runtime (but not the Oracle runtime.) Like XProtect, MRT is presumably effective against known attacks, but maybe not against unknown attacks. ![]() MRT runs automatically in the background when you update the OS. Starting with OS X 10.8.3, a third layer of protection has been added: a "Malware Removal Tool" (MRT). Never click through any request for authorization without thinking. "Sandboxed" applications may prompt for access to private data, such as your contacts, or for access to the network. An App Store developer could find a way to bypass Apple's oversight, or the oversight could fail due to human error.įor the reasons given above, App Store products, and other applications recognized by Gatekeeper as signed, are safer than others, but they can't be considered absolutely safe. ![]() ![]()
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