Brave Sentry is related to a Smitfraud infection. SmitFraud
is a generic description for a family of rogue applications/trojans such as Win32.Zlob
that uses misleading advertising, downloads rogue security products, changes (hijacks) the Windows Desktop and drops additional malware infected files. Some variants of smitfraud may even drop a rootkit. The Trojan uses bogus security warnings
and fake alerts to indicate that your computer is infected with spyware or has critical errors
. SmitFraud is responsible for downloading and installing programs that purport to scan for spyware and then uses false scan reports as a scare tactic to goad you into purchasing one of several rogue programs to fix it.
Depending on what other specific files are dropped, your system could become compromised. Brave Sentry usually drops the Troj/Brave-A Trojan (xpupdate.exe).
Troj/Brave-A includes functionality to access the internet and communicate with a remote server via HTTP.
If your computer was used for online banking, has credit card information or other sensitive data on it, the safest thing is to notify your banking and credit card institutions should be notified of the possible security breach. All passwords should be changed immediately
to include those used for banking, email, eBay, paypal and online forums. You should consider them to be compromised
. They should be changed by using a different computer and not the infected one. If not, an attacker may get the new passwords and transaction information.