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ANTI-VIRUS


                                                   ANTIVIRUS SOFTWARE



Anti Virus is a software utility that detects,prevents and removes viruses, worms, and other malware from a computer. Most anti-virus programs include an auto-update features that permits the program to download profiles for new viruses,enabling the system to check for new threats. Antivirus programs are essential utilities for any computer but the choice of which one is very important. One AV program might find a certain   virus or worm while another cannot or vice-versa.

Anti-Virus software is also known as an anti virus program or a vaccine.
Anti-virus software searches the hard drive and external media attached to a computer for any potential viruses or worms.


Broadly speaking, the two main approaches to virus detection are:

  • Dictionary Approach: The anti-virus software checks a file and automatically refers to a dictionary of known viruses. If there is a match, the file is deleted, quarantined or repaired.
  • Suspicious Behavior Approach: The anti-virus software monitors the behavior of all programs and flags any suspicious behavior. For example, a program might be flagged if it tries to change settings to the operating system or write to a certain directory.

Types of Anti-Virus Programs are: 

1.Window Antivirus Software.
2.Mac OS Antivirus Software.
3.Android Antivirus Software

Windows antivirus software. 

Most antivirus software vendors offer several levels of Windows products at different price points, starting with free versions offering only basic protection. Users must start scans and updates manually and typically free versions of antivirus software won't protect against links to malicious websites or malicious attachments in emails. Premium versions of antivirus software often include suites of endpoint security tools that may provide secure online storage, ad blockers and file encryption. Since 2004, Microsoft has been offering some kind of free antivirus software as part of the Windows operating system itself, generally under the name Windows Defender, though the software was mostly limited to detecting spyware prior to 2006.



MacOS antivirus software. 

Although macOS viruses exist, they're less common than Windows viruses, so antivirus products for macOS are less standardized than those for Windows. There are a number of free and paid products  available, providing  on-demand tools to protect against potential malware threats through full-system malware scans and the ability to sift through specific email threads, attachments and various web activities.



Android antivirus software. 
Android is the world's most popular mobile operating system and is installed on more mobile devices than any other OS. Because most mobile malware targets Android, experts recommend all Android device users install antivirus software on their devices. Vendors offer a variety of basic free and paid premium versions of their Android antivirus software including anti-theft and remote-locating features. Some run automatic scans and actively try to stop malicious web pages and files from being opened or downloaded.




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