I am a firm believer in common sense don't visit sites that are loaded with malware (for example sites, spam ads duh).ĭon't open email attachments without scanning them first. reduce performance, interfere with allowed programs etc. Second you would have to determine which 3rd party products, if any, can provide greater security than whats is built into the native OS.Īnd third if any 3rd party products are effective how much overhead do they take up i.e. Here is just one list of malware, virus or otherwise bad stuff that can sneak onto your mac and reek havoc: First I guess you really have to provide a really clear agreed upon definition for virus.