Concerned about malware

Your problem likely has nothing to do with malware. Follow every step of the following instructions precisely. Do not skip any steps.

1. Launch Activity Monitor
2. Change "My Processes" at the top to "All Processes"
3. Click on the "% CPU" column heading once or twice, so the arrow points downward (highest values on top).
   (If that column isn't visible, right-click on the column headings and check it, NOT "CPU Time")
4. Click on the System Memory tab at the bottom.
5. Take a screen shot of the entire Activity Monitor window, then scroll down to see the rest of the list, take another screen shot
6. Post your screenshots.

Macs are not immune to malware, but no true viruses exist in the wild that can run on Mac OS X, and there never have been any since it was released over 10 years ago. The only malware in the wild that can affect Mac OS X is a handful of trojans, which can be easily avoided by practicing safe computing (see below). 3rd party antivirus apps are not necessary to keep a Mac malware-free, as long as a user practices safe computing, as described in the following link.

Read the What security steps should I take? section of the Mac Virus/Malware FAQ for tips on practicing safe computing.

 

The only process worth mentioning is the PepperFlashPlayer, and even that is not using a significant amount of system resources. You may want to do screen captures again, at a time when you're experiencing the higher fan speeds.

For Flash-related issues:

• Find your Flash version and make sure it's the latest version available. Never install or update Flash from a pop-up on a website. Always go to Adobe's site to get Flash or updates.
• Install ClickToFlash (Safari), Flashblock (Firefox) or FlashBlock (Chrome) to control which Flash content plays on websites.
• Try using the YouTube HTML5 Video Player to watch YouTube videos, when available. (May impact fullscreen viewing. See link for details.) Some have reported better performance with HTML5, while some have reported worse. Try it and find out what works best for you.

 

If you're experiencing any technical problems, restarting your computer is a good first step in troubleshooting. It resolves many minor issues.

 

Plus rebooting your iPhone, iPad, and anything else that gets booted often resolves a lot of issues

 

I would argue that Flash itself is the bug. I had the same problem on my Air, and disabling Flash (with Flashblock on Firefox) solved it immediately.

 

No, can't see the connection myself.

Malware is not likely to use a great deal of CPU, as the tasks it tends to do are relatively trivial for today's computers. Monitoring keyboards, sending spam email, deleting system files -- easy.

Don't forget that lots of adverts frequently use flash, which can start to ramp things up.