![]() ![]() Our test PC with Avast Free installed booted up in 44.5 seconds, which is roughly 4.5 seconds slower than the PC without antivirus software installed, but less of a slowdown than the average of the free antivirus software we looked at. This is a good test to tell how well security software can scan for malware when files are opened or saved to disk.Īvast Free Antivirus also had a low impact on PC performance. And Avast Free completed the on-access scan speed test in 3 minutes, 40 seconds–tops among the products we looked at. This was a close second to Avira AntiVir Personal, which completed the test in 87 seconds. It scanned 4.5GB of data in 90 seconds in the on-demand scan test (that is, scans started by pressing the Scan Now button). ![]() Avast Free also did a good job at disinfecting a PC, detecting all infections on our test PC and removing all active components of malware infections 80 percent of the time, which set the pace among the free products we reviewed. The top performer in this test, the free Comodo Internet Security Premium, completely blocked 96 percent of attacks.īut on the plus side, Avast Free Antivirus didn’t falsely identify a single “safe” file as a piece of malware, the only free product we looked at that did so. It also did a decent, though not outstanding, job at detecting malware in our real-world malware detection tests: It completely blocked 76 percent of attacks (which is right about average), and partially blocked 4 percent of attacks. First, the negatives: In traditional malware scanner tests (which rely predominantly on signature files to identify malware), Avast Free Antivirus detected 94.8 percent of samples, which is neither particularly good nor bad (top scorers detected over 99 percent of malware samples). ![]()
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