There are some phishing and scam/malware sites that "cyber-squat" on URLs that are very similar (one or two characters missing or different) to legitimate web sites. I tried both URLs, with and without the extra "m", and my browser simply reported that it was unable to connect to the incorrectly addressed site. Safer to have an AV program that over-reacts than one that doesn't react at all, as annoying as that can sometime be.