Antivirus (or anti-virus) softwares are used mainly for the prevention, detection, and removal of malwares, like computer viruses, bugs etc. Antivirus softwares also assist by preventing and removing adwares, spywares, and other forms of malwares.
A variety of strategies are typically employed in the assemblage of antivirus softwares. The signature-based detection attribute of the antivirus softwares involves searching for known malicious patterns in executable code. However, it is possible for users to be tainted with new malwares in which no signature yet exist. Heuristics can be used to effectively counter such so called zero-day menaces. The most common sort of heuristic approach, generic signatures, is capable of identifying the new viruses or variants of existing viruses looking for known malicious code in files. Some antivirus softwares bear this unusual property of predicting what a file will do if opened/run by any of the applications on your computer and analyzing the consequences thereby informing the user beforehand of its malicious actions.
Tips for Virus Detection and Prevention
Do not open any files attached to any emails which are from unknown, suspicious or untrustworthy sources.
Do not open any files attached to an email unless you are sure of what it is, even if you have received it from friends or someone you know. Some viruses can reduplicate themselves and diffuse through emails. Confirm that your contact has really sent the attachments before opening the attachments.
Do not open any files attached to an email if the subject line appears to be suspicious or unexpected.
Delete chain emails and junk emails. Do not forward or reply to any sort of questionable mail. These types of emails are considered spam and are unsolicited mails sent with an intention of compromising the securities of your system.
You should be very cautious while downloading files from the Internet. Ensure that the source is legitimate and reputable. Make sure that your anti-virus program checks the files on the website prior to download.
Reliable Antivirus Softwares
Many of the updated Antivirus softwares available on the market nowadays contain all the features that you would expect in a professional antivirus program. They are very easy to use and normally offer a nice simple user interface. They are ideal for beginners but also offer the properties professionals need.
Protecting your computer against viruses not only saves your computer from the potential harm that can be originated by these viruses but also saves your routine from getting disrupted.