WOT, Web of Trust, warns you about risky websites that try to scam visitors, deliver malware or send spam. Protect your computer against online threats by using WOT as your front-line layer of protection when browsing or searching in unfamiliar territory. WOT's color-coded icons show you ratings for 21 million websites - green to go, yellow for caution and red to stop – helping you avoid the dangerous sites. Surf safer and add WOT to your Firefox now.