“Harmful Software Detected” popup is a spoof security alert from scam software System Security. This “Harmful Software Detected” popup reads:

“System Security. Harmful software detected. System Security has detected harmful software that can lead to your PC crash. Remove them now by clicking Remove All button below.”

If you follow this “Harmful Software Detected” popup’s prompts, you’ll be tricked into wasting dough on rogue security software System Security. System Security won’t remove anything but money from your wallet. But that’s beside the point: if you see this “Harmful Software Detected” popup, likely the only harmful software on your computer is System Security.

Let me show you how to block “Harmful Software Detected” popups and remove System Security, for free.

Do You Have “Harmful Software Detected” Popup?

When you’re infected with badware — whether it’s “Harmful Software Detected” Popup, spyware, adware, a Trojan, or a virus — there are a few key symptoms. Have you noticed…

• Slow computer performance: It just takes one parasite like “Harmful Software Detected” Popup to slow your computer dramatically. If your PC takes longer than usual to reboot, or if your Internet connection is unusually slow, you may be infected with “Harmful Software Detected” Popup.
• New desktop shortcuts or switched homepage: Badware like “Harmful Software Detected” Popup may change your Internet settings to redirect your homepage to another site. Badware can even add desktop shortcuts to your PC.
• Annoying popups: Badware can bombard your computer with popup ads, even when you’re not online. Through these popups, you may be tricked into downloading more spyware.

How to Remove “Harmful Software Detected” Popup Manually

Before we get started, you should backup your system and your registry, so it’ll be easy to restore your computer if anything goes wrong.

To remove “Harmful Software Detected” Popup manually, you need to delete “Harmful Software Detected” Popup files. Not sure how to delete “Harmful Software Detected” Popup files? Click here, and I’ll show you. Otherwise, go ahead and…

Delete “Harmful Software Detected” Popup files:

Remove “Harmful Software Detected” Popup registry entries:

“Harmful Software Detected” Popup May Be Rogue Anti-Spyware

Rogue anti-spyware refers to anti-spyware/antivirus software of questionable value. Rogue anti-spyware may not be proven to protect your computer from spyware, may popup fake alerts or create many false positives about your PC being infected, or may use scare tactics to try to get you to purchase the application. Rogue anti-spyware software may be installed by a Trojan, come bundled with other software, or install itself through web browser security holes. While it is fairly rare, some rogue anti-spyware is created and distributed by known spyware or adware companies, and the rogue anti-spyware may install spyware or adware itself.

Often when you’re infected with rogue anti-spyware like “Harmful Software Detected” Popup, you’ll see a false popup security alert like this:

Rogue Anti-Spyware Tactics

Typically, rogue anti-spyware such as “Harmful Software Detected” Popup has one or more of the qualities listed below, which is why rogue anti-spyware is considered anti-spyware software of questionable value.

• False positives/fake alerts: Rogue anti-spyware may produce a large number of false positives or use fake alerts, noting that your computer is infected with spyware parasites or other threats that do not really exist.
• Copycat looks: Rogue anti-spyware may copy the look and feel of other legitimate or rogue anti-spyware applications. Often, rogue anti-spyware applications may appear as close clones of other rogue anti-spyware software.
• High pressure marketing: Rogue anti-spyware may use scare tactics or other aggressive advertising and marketing tactics to try to trick you into buying the rogue anti-spyware application. Often, rogue anti-spyware may produce false positives and fake alerts about your computer being infected.
• Poor detection/scan reporting: Rogue anti-spyware may produce poor reports when it scans your PC. For example, rogue anti-spyware may say your computer is infected 11 parasites, but not specify which spyware parasites or what type of parasites. Rogue anti-spyware may also report that your PC is infected with SafeAndClean, but not tell you which related files, DLLS, etc. were found on your computer.
• Weak scanning/detection: Rogue anti-spyware may not only poorly report on computer infection, but rogue antispyware may also poorly scan your PC. Rogue anti-spyware may skip over important folders and files of your computer that should be scanned to detect spyware.

Did “Harmful Software Detected” Popup use these tactics to trick you into buying “Harmful Software Detected” Popup?