BlockDefense is a rogue security application that cyber criminals developed to harm your computer and steal your money. It can sneak onto your computer through malicious websites via browser security holes. It also uses fake online scanners to promote itself. However, the most common means of infection is through Trojan horse applications.

No matter how BlockDefense finds its way onto a computer, it will perform fake scans that yield deceptive results. It will also cause falsified security alerts to appear on the infected user’s desktop. It does this in order to scare them into paying for a useless program that doesn’t do what it claims to. Instead of defending a computer, BlockDefense will generate pop-ups, hijack the web browser, slow the Internet connection, hinder system performance, possibly steal money, and worst of all it can swipe the user’s personal information.
If this rogue has infected your computer, you should have it removed immediately. If you wish to do this manually, you should start by killing these processes:

9zgr7zsq.exe
v4rb9isc.exe
BlockDefense.exe
uninstall.exe
BlockDefenseSvc.exe

Relative file contents:

10365not-a9virus53z.dll
9zgr7zsq.exe
3 Uninstall.lnk
2 Homepage.lnk
11101vi9us57z.ocx
1051zwor94a1.ocx
v4rb9isc.exe
BlockDefense.exe
BlockDefenseSvc.exe
Uninstall.exe
BlockDefense.lnk
1 BlockDefense.lnk
2 BlockDefense.lnk
3 BlockDefense.lnk
nsProcess.dll
nsSCM.dll
data.bin
license.txt

Delete these registry entries:

HKEY_CURRENT_USER\Software\BlockDefense
HKEY_LOCAL_MACHINE\SOFTWARE\BlockDefense
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\BlockDefense
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\Root\LEGACY_BLOCKDEFENSESVC
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\BlockDefenseSvc
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run “BlockDefense”

Unregister these DLLs:

nsProcess.dll
nsSCM.dll
10365not-a9virus53z.dll

Delete these files:

v4rb9isc.exe
BlockDefense.exe
license.txt
uninstall.exe
1051zwor94a1.ocx
11101vi9us57z.ocx
BlockDefense.lnk
1 BlockDefense.lnk
2 Homepage.lnk
3 Uninstall.lnk
9zgr7zsq.exe
nsProcess.dll
nsSCM.dll
10365not-a9virus53z.dll

Finally, you should delete these directories:

c:\Documents and Settings\All Users\Start Menu\Programs\BlockDefense
c:\Program Files\BlockDefense Software
c:\Program Files\BlockDefense Software\BlockDefense

Though manually removing BlockDefense will work, it will only get rid of one malicious program. If the Trojan that downloaded it still remains it could easily be reinstalled. The only way to make sure that your computer is completely free of malicious software is to use a quality, trustworthy antispyware.

SpyZooka is a legitimate antispyware app that you can trust. The company that developed it is a member in good standing with the Better Business Bureau. In fact, SpyZooka has won several prestigious awards and is the only legitimate antispyware with a 100% spyware removal guarantee. Don’t settle for partial protection by the other guys. Get complete protection from spyware, adware, Trojans, rogue security apps, and other malware with SpyZooka.