Antivirus Software Reviews
Antivirus software is one of the software that you must install in your computer in order to protect your computer influence by virus. Some antivirus software are unable to catch the virus that hadn’t even been named or known, therefore you should buy an powerful and popular antivirus software to install in your computer.
How does an antivirus software detect and eliminate potential virus threads? First, you can use computer security program on your pc to scans any files looking for virus definitions that match a virus dictionary. You will be get notify by software alert if the virus is found. Second is to identify and suspicious virus behavior. When these behaviors are detected, the antivirus software will gets rid of the infected files.
There are certain free antivirus software that you can trust to safely install in your pc, Trend Micro’s Free Antivirus is one of them. Apart from antivirus software, in fact you also can use the free tools which available on the net to detect and block viruses, trojans, worms and other malware and also to clean-up any infections that may slip into your pc, laptop, and mobile phone.
If you don’t have any antivirus software install in your pc, quickly go to buy an popular antivirus software and install in our pc. If you think the free antivirus software is good enough to protect your computer influence by virus, then just go ahead to download for free. At least, you have install an antivirus software in your pc!
Antivirus Software Reviews
Friday, October 16, 2009
Antivirus software
Antivirus Software Reviews
By Wikipedia, the free encyclopedia
Antivirus (or anti-virus) software is used to prevent, detect, and remove malware, including computer viruses, worms, and trojan horses. Such programs may also prevent and remove adware, spyware, and other forms of malware.
A variety of strategies are typically employed. Signature-based detection involves searching for known malicious patterns in executable code. However, it is possible for a user to be infected with new malware in which no signature exists yet. To counter such so called zero-day threats, heuristics can be used. One type of heuristic approach, generic signatures, can identify new viruses or variants of existing viruses for looking for known malicious code (or slight variations of such code) in files. Some antivirus software can also predict what a file will do if opened/run by emulating it in a sandbox and analyzing what it does to see if it performs any malicious actions. If it does, this could mean the file is malicious.
However, no matter how useful antivirus software is, it can sometimes have drawbacks. Antivirus software can degrade computer performance if it is not designed efficiently. Inexperienced users may have trouble understanding the prompts and decisions that antivirus software presents them with. An incorrect decision may lead to a security breach. If the antivirus software employs heuristic detection (of any kind), the success of it is going to depend on whether it achieves the right balance between false positives and false negatives. False positives can be as destructive as false negatives. In one case, a faulty virus signature issued by Symantec mistakenly removed essential operating system files, leaving thousands of PCs unable to boot.[1] Finally, antivirus software generally runs at the highly trusted kernel level of the operating system, creating a potential avenue of attack.[2]
In addition to the drawbacks mentioned above, the effectiveness of antivirus software has also been researched and debated. One study found that the detection success of major antivirus software dropped over a one-year period.[3]
Antivirus Software Reviews
By Wikipedia, the free encyclopedia
Antivirus (or anti-virus) software is used to prevent, detect, and remove malware, including computer viruses, worms, and trojan horses. Such programs may also prevent and remove adware, spyware, and other forms of malware.
A variety of strategies are typically employed. Signature-based detection involves searching for known malicious patterns in executable code. However, it is possible for a user to be infected with new malware in which no signature exists yet. To counter such so called zero-day threats, heuristics can be used. One type of heuristic approach, generic signatures, can identify new viruses or variants of existing viruses for looking for known malicious code (or slight variations of such code) in files. Some antivirus software can also predict what a file will do if opened/run by emulating it in a sandbox and analyzing what it does to see if it performs any malicious actions. If it does, this could mean the file is malicious.
However, no matter how useful antivirus software is, it can sometimes have drawbacks. Antivirus software can degrade computer performance if it is not designed efficiently. Inexperienced users may have trouble understanding the prompts and decisions that antivirus software presents them with. An incorrect decision may lead to a security breach. If the antivirus software employs heuristic detection (of any kind), the success of it is going to depend on whether it achieves the right balance between false positives and false negatives. False positives can be as destructive as false negatives. In one case, a faulty virus signature issued by Symantec mistakenly removed essential operating system files, leaving thousands of PCs unable to boot.[1] Finally, antivirus software generally runs at the highly trusted kernel level of the operating system, creating a potential avenue of attack.[2]
In addition to the drawbacks mentioned above, the effectiveness of antivirus software has also been researched and debated. One study found that the detection success of major antivirus software dropped over a one-year period.[3]
Antivirus Software Reviews
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