How do we identify potentially unwanted software?Analyzing and categorizing potentially unwanted software is a complex problem. Developers of potentially unwanted software rapidly evolve their products. Some even contain a few characteristics that resemble legitimate software to mask the unwanted functionality. It's an on-going process, and we work hard to identify common behaviors that help provide you the highest level of protection.
Mozilla Firefox - Block Attack Sites and Web Forgeries. Phishing and Malware Protection is a built-in feature on Firefox version 3 or later. It warns you when a page you are trying to visit contains phishing content or an attack site designed to drop threats such as 'Your system has been blocked - Microsoft Security Essentials Alert'. Research Report on “Website Blocked Due to Trojan” Pop-up Virus “Website Blocked Due to Trojan” Pop-up is triggered by Trojan and has the power to control everything here. In its normal conducts, it could not only destroy and influence the documents or files, but also it could get your credentials and carries on cyber criminals as well.
In some cases, where the behavior is questionable, we will list the application even if it does not neatly fit into the listed criteria.