Currently Being ModeratedJun 4, 2013 3:16 PM (in response to scarmazzia)
Download EtreCheck from http://www.etresoft.com/etrecheck, run it, and paste the results here. It will report any background processes. It will not report if any of the various sharing services are turned on. You will have to check that manually.
Disclaimer: Although EtreCheck is free, there are other links on my site that could give me some form of compensation, financial or otherwise.
Currently Being ModeratedJun 4, 2013 4:42 PM (in response to scarmazzia)
The only way you can be sure you don't have a keylogger is to erase the startup volume, reinstall OS X, restore only your documents from a backup, and then reinstall your third-party software from fresh downloads or original media.
Currently Being ModeratedJun 5, 2013 2:08 AM (in response to scarmazzia)
There are several keyloggers for mac, but the only one I've seen personally is ABK.
Open up Activity monitor and type ABK in the filter bar - make sure the drop down menu says 'All Processes'. If you find it, I believe the app hides as an invisible file here:
Of course, there are other keyloggers around, so not finding it only tells you that you don't have this one.