I am running Mac OS 10.7.3 on a MBP 13" with i7 processor.
Can anyone tell me why the creators of ClamXav and VirusBarrier Express would not want to do an initial scan of the folders that contain email attachments?
Two days ago I ran the free ClamXav antivirus program I downloaded through the Apple's Mac App Store and it found between 400 and 500 threats. I did not see the flashback trojan and I assumed the other threats were Windows viruses. I deleted all the threats it found. The interface for this free app was not really user friendly. I assumed that I was scanning my whole drive when I started the scan, but it did not scan all my files. I believe it scanned less than half, but can't be sure.
Since I was looking for a more user-friendly interface for family members, I decided to try VirusBarrier Express. Also free from the Mac App Store. It was slow and scanned between 400,000 and 500,000 files on my internal drive which Disk Utility says has 1,052,289 files on it. I assumed I was going to scan the who drive because I clicked on the "Full Scan" button. It found no threats, which did not surprise me because I had previously run ClamXav and chose to remove all the threats it found.
I downloaded a trial version of MacKeeper since my Mac was running slow, has too many files, and I wanted to try to speed it up by paring down the number of files. It has as part of its suite of applications, Internet Security. After running the other two free apps (ClamXav and VirusBarrier Express) I decided to try the antivirus part of this $38 app that I was trying out for free. What the heck, I thought. It ran fast and scanned approx. 935,000 of my 1,052,289 files by simply clicking on the "Start antivirus scan" button. It found 91 threats. All were in my ~/Library/Mail/V2/IMAP... folder. I checked and found that these emails arrived before I did the other two scans with ClamXav and VirusBarrier Express, so those programs should have found these threats. They did not.
Perhaps ClamXav and VirusBarrier Express would have found those 91 threats if they had been configured correctly by me. I don't know. But the point is that I thought I was going to scan everything that needed to be scanned by clicking on the buttons that these applications' creators seemed to expect my to click. With Internet Security in the MacKeeper application, I clicked on the obvious button "Start antivirus scan" and it found 91 threats the others did not find.
I did not check all 91 of these threats that MacKeeper found, but the ones I did check out in the Mail application obviously contained malware. They were poorly disguised attempts to get people to open attachments.
Full disclosure: I do not work for any entity associated with ClamXav or VirusBarrier Express or MacKeeper. I am a pastor. I used to work for an Apple Store years ago.
Message was edited by: Roger Lier1