It is a software able to prevent, detect and remove any malicious program or file that is on the computer to prevent damage that may be caused by the spread or the spread between the virus throughout the system. Currently antivirus specialize more on prevention to leave a little aside to the same disinfection, this software was first used in the 80's and has slowly been optimizing its work by having search engines, updated and much more complete.
Generally rely more on antivirus blocking realtime tempranero future infection that can cause harmful code. Distribution companies are choosing to increase the field of disinfection by immunizing other viruses such as spyware, riskware, worms, malware, Trojans and more.
Due to the variety of programs exist countless infectious virus whose analysis and disposal systems are different, but the antivirus follow a basic pattern of operation, for example, you must have a list of all the viruses that have been detected by now Worldwide, the virus does is collect this information through the upgrade and then have to scan your computer to detect viruses that are in the blacklist.
The antivirus have certain applications in content, such as vaccine, which consists of filtering programs that are running on the system in real time, one is the detector, the classic application that scans all files stored on the computer or simply in a direction that prompted work and usually many viruses that can not be disinfected pass quarantine to block such files, the disposer is the final process of the software, viruses can be removed and locked or placed quarantined and can also delete documents that have been infected with the virus itself to not allow the spread to other files.
At present various antivirus have different ways of acting but known methods are widely used, as the system relies on heuristic detection by generic firms, compiled code detection, unpacking, disassembly, etc.. This technique is used when it is not possible to find optimal solutions for small instances short-term alternatives.
Another factor is the mode used HIPS which acts as a precaution against intrusions from wanting to stay in the network, as well as the treathsense.net for early warning, filtering HTTP, POP3, protections Internet traffic and email e .
One of the best antivirus is definitely Kaspersky is very complete for spyware detection, has several daily updates, real-time protection and preventive scan settings but implementation is slow and consumes many system resources, download it now for 30 days from their own website here .
Kaspersky has a free antivirus online in which you must download some files so you can start scanning, you can work in the background.
Other antivirus engine from Kaspersky labs and is developed by the company called AOL Active Virus Shield, has automatic updates, follow up emails, real-time detection, is lighter and free download is here .
The NOD32 antivirus is one of the best antivirus that can exist and its greatest strength is its lightness when scanning your computer, in addition to automatic updates, heuristic, real time protection, it also has support antispam, firewall for several emails to download its trial version can come here .
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