“Hardware and security errors detected” is part of a fake “Windows Explorer” that will perform security scanning on computer automatically without users intervention. This activity is related to promotion of rogue programs. The message may appear like:
Hardware and security errors detected
Hardware errors
Performance of your PC is low due to a file system error. It was [...]

“Harmful and malicious software detected” is a fake virus scan result that will pop-up on computers who are already compromised with a fake antivirus. This warning messages will lead to downloading of another threats and has a full message of…
WARNING!
Harmful and malicious software detected
Online Scanner detected programs that may compromise your privacy or damage your [...]

“Warning! Spyware is part of an overall public concern about privacy!” is identified to be part of a certain rogue antivirus program and was produced to get computer users attention on security issue. The window will pretend to be an online scanner with messages:
Warning! Spyware is part of an overall public concern about privacy!
Adult screenshot [...]

“Warning! Windows has been infected” popup message was found to be a part of a rogue security program operations on the infected computer to promote itself. Once user was convinced with these tactics and start to download a program. Expect that other malware will be downloaded onto the computer to perform different annoyances. This warning [...]

“Warning! Detected porn files” is a popup warning message on computer that was compromised with a rogue anti-spyware application. These are misleading alerts that may lead to downloading of another malware. The full message reads:
Warning!!! Detected porn files
Hard drive scanner results: Warning! Your computer is full of porn files

“Warning: PC is at risk” is a threat detected by an Antispyware program WiniShield and Antispyware Webscanner. The full message read:
Attention: scan results
Warning: PC is at risk
During the scan AntiSpyware has detected 297 dangerous threats to be removed
It is highly recommended to remove all these unwanted threats from your PC right now!

Trojan.Win32.Splitter is reflected as “Virus Name” during a WiniShield rogue program scanning on computer. Trojan.Win32.Splitter may not really exists on system and this alert was used to deceived computer users to purchase the said rogue antivirus program.

“Half Lemon” is a threat included in the Infiltration Alert message being issued by Windows Antivirus Pro. The full message reads:

“[AOC] - Anvil of Crom virus Coded by Bumblebee/29a” is a text being displayed on computers that were infected with a variants of Win32:AOC family of virus. This will infect .exe and .dll libraries under Windows System directory.

Backdoor.Win32.Hupigon.fixn is a threat specified in a security alert issued by a fake program Windows Antivirus Pro to mislead computer users and obtain a copy of the said rogue application. The full message reads:
Windows Antivirus Pro has denied internet access of the program.
Internet Explorer is possible injected with worm Backdoor.Win32.Hupigon.fixn. This worm
attempts to send your personal information to [...]