Name: Spw.BlockChecker Category: Spyware Advice: Remove Risk: High Risk High risk threats typically are remotely exploitable vulnerabilities, which can lead to system compromise. Successful exploitation does not normally require any interaction. May open up communication ports, use polymorphic tactics, stealth installations, and/or anti-spy counter measures. May use a security flaw in the operating system to gain access to your computer. Description: Spw.BlockChecker is a free utility designed for popular instant messaging programs to see if a buddy has you blocked. Spw.BlockChecker installs several files including a BHO (Browser Helper Object) which displays pop-up advertising. Signatures: process: block checker.exe: MD5 Hash: bc30652f408c2c7dae3... process: ccapp.exe: MD5 Hash: a84ecad779f4449bc96.. Type: Spyware - Spyware's primary purpose is to collect demographic and usage information from your computer, usually for advertising purposes. Spyware usually that 'sneaks' onto a system or performs other activities hidden to the user. Spyware programs are usually bundled as a hidden component and downloaded from the Internet. These modules are almost always installed on the system secretively and try to run secretively as well.