Malware Hunter is a new online crawler that scans the internet to identify command-and-control servers. The crawler has identified over 5,700 RAT C&C servers so far, with more than 4,000 of them located in the U.S. The service is updated in real time so security vendors, companies and even independent researchers can use it in firewalls and other security products to block malicious traffic. The downside of crawlers masquerading as infected computers could trigger false positive alerts on people’s security systems that filter incoming traffic.”]