These may come in the form of a rescue CD, a command-line no-install scanner, or a threat-specific cleanup tool. Quite a few vendors offer secondary cleanup tools to handle installation problems. If malware does manage to cause trouble, but the installer works around it, that's still good for five stars. If the product installs and runs without incident on all my test systems, it gets five stars. I've devised a rating system to reflect how well products handle this kind of resistance. Quite a few examples of modern malware actively fight back against installation of security software, or prevent successful scanning. There's a wide variation in the way antivirus products handle cleaning up malware-infested systems. My latest malware collection doesn't include enough rootkit samples to reasonably report a separate rootkit score, so I've turned my thoughts to another facet of antivirus competence. ![]() AVAST FREE MAC ANTIVIRUS REVIEW PCMAG INSTALLRating the Install Experience For some years, I've scored antivirus products on their ability to remove malware in general and separately on their ability to remove malware that uses rootkit techniques to hide malicious activities. It took the agent a couple hours of intense work to get avast! properly installed on this system. Even so, the malware repeatedly deleted the remote control tool, the avast! installer, and various other tools that the support agent brought to bear on the problem. We couldn't use the Remote Assistance feature built into avast!, since the product could not install, but a third-party remote tool did the job. After verifying that remote assistance would be available to any user, I agreed. After a few back-and-forth emails, the agent suggested remote assistance. On another test system, malware actively killed avast!'s installer and its associated process. AVAST FREE MAC ANTIVIRUS REVIEW PCMAG FULLDoing so didn't bring back the desktop, but it allowed me to install avast! and run a full scan, which wiped out the ransomware. Tech support advised opening Task Manager and killing a specific process. Ransomware on one system completely blocked access to the desktop, even in Safe Mode. Some Installation Challenges The product installed without incident on most of my malware-infested test systems. This is also the place to sign up for a free credit alert service. Here you can purchase a variety of security tools for PC, Android, and Mac.
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