My norton antivirus is not updating
For sure, not all of these losses were incurred due to Trojans, worms, viruses, rootkits and malware.
This is a lot more compared to the estimated $288 billion in revenues from the black markets for cocaine, heroin and illegal drug trades combined.But when you run the new program you just found, it can do anything from popping up a message to erasing your hard disk, as the rogue PKZIP utility really did.In either case, you have to actually launch the infected program or the trojan horse for it to infiltrate your system.Refusing to open unsolicited e-mail of any kind is the only sure-fire way to sidestep all forms of trouble.Anti-virus software is crucial to preventing virus attacks, but this strategy only works if users update their software."Trojan horse" programs are similar to viruses in their effect on your system, but they can't reproduce themselves.
They're usually a program disguised as something you might want to download onto your computer—for instance, a rogue, modified version of PKWare's PKZIP utility.
It usually loads itself into your computer system when you run a program to which it has attached itself.
From the computer system, it'll then reproduce itself, much like a biological virus would, by attaching copies of itself to other programs on your hard drive.
Though hoax e-mails, like the one about the "Good Times" virus try to make you believe otherwise, neither a virus nor a trojan horse program can do anything if you simply leave the malevolent file sitting on your hard drive.
Finding out that you copied a trojan horse onto your computer is remarkably easy.
Or the credit card processor Card Systems Solutions which may yet go out of business from major security breach at the company's Tucson, Arizona, operations center.