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.
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.
Do you know how to remove it? So last time my friend borrowed my laptop and I thought she just needed it for research or something but apparently she downloaded the Aebo Keylogger into my laptop so she probably can see what I'm typing right now, but well, I really need help! The current software that's running on my laptop is OS X Yosemite, can any of you help remove it? I've been searching how to remove the software everywhere and I cannot find the solution, please help!