OS X Mountain Lion: Avoid harmful software
Some software is harmful and can cause problems for your computer. Frequently, a harmful app will try to appear as an innocent document, such as a movie or graphic file. These apps, called “trojans,” are most often spread by Internet downloads and email enclosures.
Here are some tips to protect your computer from harmful apps.
- Never download unlicensed or “pirated” software from the Internet.
- Only use apps from a known and trusted source. You can limit the types of apps that open on your Mac, using the Security & Privacy preferences. For more information, see this help topic:
- Run an antivirus program if you find any suspicious files or apps, or you notice any suspicious behavior on your computer.
- To reduce the amount of exposure to harmful apps or files, limit the number of administrator users you create. Consider creating a standard user for your daily work and use the administrator user only when you need to install software or administer users.
- If you enabled the root user and you don’t currently need it, disable it.