putnik wrote:
Another well known product is Malwarebytes, but do not install both this and DetectX.
I'm not disagreeing with you on this, but I think your advice is more general than that. If, for whatever reason, someone wants to install 3rd party security software, they should do research, and install only one. Maybe even try out a few, but only one at a time.
I've heard of DetectX but I don't know any details about it. I do know that Apple's built-in malware protection has a number of unusual traits. These unique behaviours make it relatively compatible with 3rd party security tools. But 3rd party security tools all tend to do the same things using the same methods, so no one should ever install more than one 3rd party security tool at a time.
And this advice is only good today. In June, Apple could re-vamp the built-in security and make my advice incorrect. MalwareBytes even recently added a kernel extension. It is still an excellent tool, but kernel extensions are always problematic.
For traditional anti-virus software (sometimes a stipulated requirement in a commercial environment), many people use ClamXav. Note that the App Store version does not have the scan engine for monitoring activity.
ClamXAV hasn't been in the Mac App Store for some time.
No one should ever install security software from the Mac App Store. The technical limitations that Apple puts on software in the Mac App Store prevent any security software from being fully functional. Apple banned them from the iOS store. I don't know why they still allow them in the Mac store. They do nothing but give people a false sense of security.