antivirus helps to protest against virus on computer and protect data. Real-time protection, on-access scanning, background guard, resident shield, autoprotect, and other synonyms refer to the automatic protection provided by most antivirus, anti-spyware, and other anti-malware programs. This monitors computer systems for suspicious activity such as computer viruses, spyware, adware, and other malicious objects in 'real-time', in other words while data loaded into the computer's active memory: when inserting a CD
internet security like antivirus but some more features are available in internet security Real-time web scanning, protect virus site, give warning to phishing sites, addditional protection on money transfer site like paypal orinternet banking sites.
total security is a full featured softwear it have all features of antivirus and internet and security and some additional features like parent control protection on adult sites...
Anti-virus programs detect new viruus they are not always effective against new viruses, even those that use non-signature-based methods that should detect new viruses. The reason for this is that the virus designers test their new viruses on the major anti-virus applications to make sure that they are not detected before releasing them into the wild Some new viruses, particularly ransomware, use polymorphic code to avoid detection by virus scanners. Jerome Segura, a security analyst with ParetoLogic.
A proof of concept virus has used the Graphics Processing Unit (GPU) to avoid detection from anti-virus software. The potential success of this involves bypassing the CPU in order to make it much harder for security researchers to analyse the inner workings of such malware
if a new virus found in your computer the antivirus take a copy of that virus and send the virus in to antivirus lab and analyse the virus and add the new virus data base in to all antivirus. adding new data base into antivirus is called updating
Some antivirus vendors maintain websites with free online scanning capability of the entire computer, critical areas only, local disks, folders or files. Periodic online scanning is a good idea for those that run antivirus applications on their computers because those applications are frequently slow to catch threats. One of the first things that malicious software does in an attack is disable any existing antivirus software and sometimes the only way to know of an attack is by turning to an online resource that is not installed on the infected computer
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