Paladin Antivirus is a rogue antivirus on Microsoft Windows. It is usually installed on the PC from installing programs with an installer that can install additional programs. The program itself claims to have 5 stars, and a "best" value from "PC Pro". Unlike other rogues or antiviruses, Paladin Antivirus has sound effects.
After installing itself on the computer, it claims there is an unauthorized antivirus on the computer, saying that the user should remove it, or it would conflict with Paladin Antivirus. The antivirus claims that the user has malware. Which then asks the user to pay for premium to remove the malware.