Upgrade to a newer version of OS X as soon as you can.įollow these guidelines, and you’ll be as safe from malware as you can reasonably be. Those bugs will probably never be fixed, because those older operating systems are no longer being maintained by Apple. This setting is mandatory in OS X 10.5.8 or earlier, because Java in those versions has bugs that make it unsafe to use on the Internet. Few websites have Java content nowadays, so you won’t be missing much. No intermediary is acceptable.ĭisable Java (not JavaScript) in your web browser(s). Software with a corporate brand, such as Adobe Flash Player, must be downloaded directly from the developer’s website.“Cracked” copies of commercial software downloaded from a bittorrent are likely to be infected.A web operator who tells you that you have a “virus,” or that anything else is wrong with your computer, or that you have won a prize in a contest you never entered, is trying to commit a crime with you as the victim.Any website that prompts you to install a “codec,” “plug-in,” or “certificate” that comes from that same site, or an unknown site, merely in order to use the site, is untrustworthy.How do you know a source is untrustworthy? That means, primarily, that you never install software from an untrustworthy source. If you're smarter than the malware attacker thinks you are, you won't be duped. All known malware on the Internet that affects a fully-updated installation of OS X 10.6 or later takes the form of trojans, which can only work if the victim is duped into running them. The most effective defense against malware is your own intelligence. In most cases, there’s no benefit from any other automated protection against malware. The recognition database is automatically updated once a day however, you shouldn't rely on it, because the attackers are always at least a day ahead of the defenders. OS X versions 10.6.7 and later have built-in detection of known Mac malware in downloaded files. If you have reason to suspect that you're the target of such an attack, you need expert help. That threat is in a different category, and there's no easy way to defend against it.
It does not apply to potentially harmful software, such as keystroke loggers, that may be installed by an attacker who has hands-on access to the victim's computer. This comment applies to malicious software ("malware") that circulates on the Internet and is installed unknowingly by the victim of the attack.
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