Virus : a computer program that can copy itself and infect a computer.
Its payload may be destructive, destroying data on your PC or, more commonly these days, attempt to gain access to information
such as passwords or credit card numbers
Trojan : a program that appears to perform a desirable
function for the user but instead facilitates unauthorized access to the user's computer system or data. It is often distributed via
P2P file sharing sites. The term is derived from the Trojan Horse story in Greek mythology.
: a software package which automatically plays, displays, or downloads advertisements to a computer after the software is
installed on it or while the application is being used. While advertsing-supported applications may be deemed acceptable
by many, some such software hijacks your normal internet searches and displays content from its owners instead. Many consider
their PCs unusable while affected in this way.
Spyware : is a type of malware that is installed
on computers and collects little bits information at a time about users without their knowledge. The presence of spyware is
typically hidden from the user, and can be difficult to detect.
Rootkits : a software system that
consists of one or more programs designed to obscure the fact that a system has been compromised. An attacker may use
a rootkit to replace vital system executables, which may then be used to hide processes and files the attacker has installed,
along with the presence of the rootkit itself.
Some malware can be removed quite easily, while others require considerable effort to prise out of the system.
Be under no illusion - these products are dangerous and, even if they don't seem to be doing much harm right now, will
Demsoft Solutions have been battling (and beating!) viruses since they were first developed in the mid-1980's.
Once we've cured your infection we can also advise on which anti-malware products are best suited to your requirements.
In many cases a completely free solution will be all that you need.