The top ten most prevalent spyware and malware threats for the month of April are compiled from monthly scans performed by Sunbelt’s award-winning antispyware tool, CounterSpy(tm), and is a service of the Sunbelt Software Malware Research Labs. New threats that appear for the first time in the top ten lists include the Trojan.Vxgame and Blaire threats. Trojan.Vxgame is a severe threat — a Trojan program that silently downloads additional malware from the Internet and lowers a user’s system security settings by disabling the Windows firewall. Blaire is also a high risk threat — a worm distributed through mass emails. Once executed on a user’s computer, it functions as a backdoor, opens illicit network connections, and uses polymorphic tactics to self-mutate, disable security software, modify system files, and install additional malware. The results represent the number of times a particular spyware or malware infection was detected during CounterSpy scans that report to ThreatNet(tm), Sunbelt’s community of opt-in users of CounterSpy.