Here at Small Dog, we frequently see computers with malware infections. Many people fall victim to scammers online that trick them into downloading software that harms their computer and makes it impossible to browse the Internet. Fortunately, software exists to counter this. The one that we typically recommend is Malwarebytes Anti-Malware.
Malwarebytes is free application that can scan your computer for known malicious software. It is frequently updated to allow it to detect the newest threats. The software is very lightweight at less than 9 megabytes. It does not have many features other than it’s main function of scanning for and removing malware, but it does its job very well. It is also extremely quick to scan for threats, running full scans in only a few seconds on most systems.
A system snapshot feature is also included. This outputs detailed information about the software installed on your computer to a text file. This can be useful to technicians diagnosing your computer by revealing issues with software that you may not have been aware of being installed on your system.
Malwarebytes is compatible with Macs running OS X 10.8 or higher, so if you have an older computer you may need to update your operating system to be able to use this software. As always, any time you are considering updating your operating system, ensure existing software you wish to continue using is compatible and that you perform a back up of your computer.