SCORE
PRICE Free from avast.com
Avast is one of the best-known names in free antivirus, and its paid-for products don’t slouch, either. Its malware detection engine is the only one in this group test to score a 100% protection rating from AV-Test, AV Comparatives and SE Labs for successfully blocking all malicious files. It didn’t do such a perfect job when it came to correctly allowing through legitimate software and websites: AV Comparatives found that it blocked two benign items and