* Tixcet.A: masked as a Microsoft Word file, this worm will try to turn Halloween into a nightmare by deleting files with specific extensions (.DOC, .MP3, .MOV, .ZIP, .JPG, etc.). Party-goers will be panic-struck on realizing the loss of photos, videos, songs and documents.

* Antivirus2008pro: This malware is among the smartest; it disguises itself as a free antivirus to sneak into users’ ‘homes’. Though several people let it in, the house will soon be filled with cries of horror as it starts to display false transmissions until users decide to pay for the antivirus. Surely a good guest if you want a spooky Halloween!

* Goldun.TB: This petty thief camouflages itself as an attachment to an e-mail showing that the victim’s Internet service will be suspended. Once on computers, it sneaks passwords and online payment information. Not something you require at your Halloween party, as it can leave you penniless, no matter how safe you think your money is.

* Baker.LGC: Also known as the fake Fernando Alonso story, this Trojan gets into users’ computers falsely reporting an accident involving the Spanish F1 driver. Banker.LGC thereby strains to gain users’ trust to steal their banking data and take their money.

* Turkojan.I: This Trojan has one of the most attractive disguises, as it authorizes itself off as a new episode of the “The Simpsons”, getting many lovers to open the door. Its real nature however is more frightening, as it is a harmful code that destructs users’ computers.

* Banbra.FXT: This Trojan’s Halloween disguise is that of a Brazilian polite servant. Passing itself off as an email from Brazil’s Federal Ministry, it will clear out the bank accounts of users who trust it and are fooled by its disguise.

* AutoKitty.A: because of its attracting Hello Kitty icon, many people could be influenced into letting this malware sample in. Still, behind its harmless appearing is a worm that carries out numerous modifications to the Windows Registry to prevent the computer from working correctly. Numerous users will be afraid on seeing their computer won’t work because of this malware.

* PHilto.A: Under the pretense of a Paris Hilton video is a Trojan designed to download adware -found as NaviPromo- onto your computer.

* MeteorBot.A: It is a backdoor Trojan that reaches computers masked as Superman. But this isn't superhero, it’s a super villain projected to steal PC information (IP address, name of the computer, operating system).

* PGPCoder.E: indefinite of the better ways to wreck a Halloween party is to invite this Trojan, which will leave the party without music, videos, photos… Its aim is to encrypt the computer files (music, video, text, photos, etc.). The disguise is not so cunning, as it only warns users that their files are not encrypted and asks them to encrypt them. However, its consequences make it among the most fearsome guests at any Halloween party.