A computer virus is a computer program that can replicate itself and spread to multiple computers. It is used to refer to malware, including adware and spyware programs. Malware includes Trojan horses, rootkits, and computer worms. A web scripting virus is a type computer security vulnerability through websites that breaches your web browser security. This allowes the attackers to inject client-side scripting into the web page. It can bypass access controls, steal your information from your web browser. Web scripting viruses are usually used to attack sites with large populations such as social networking, user review, and email. Web scripting viruses are able to propagate a bit faster than other viruses. A common version of web scripting viruses are DDoS. It has to the potential to send spam, damage data and defraud users.
Generally there are two different types of web scripting viruses, these are non-persistent and persistent attacks. Non-persistent is when you are attacked without knowing. A persistent attack is when you directly get your cookies stolen and the attacker can hijack your session. This allows the attacker to inpersonate you and can lead to a lot of damage.
The best ways to prevent these viruses and exploits are by safely validating untrusted HTML input, cookie security, disabling scripts, and scanning services like an anti-virus which has real time protection on your web browser. It's also beneficial to not visit unknown websites and using World of Trust to make sure that the site is safe.You would notice if you have a web scripting virus if you searches are linked to elsewhere, background changed, and homepage changed. The computer would feel slow and sluggish, and there would be instances of programs being closed randomly. Modern day browsers have add-ons such as Ad Blocker Plus which allow users to block out scripts from being loaded.
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