What is protective shield in a antivirus software?

Antivirus softwares have an engine known as 'shield' or 'protective shield' whose primary job is protecting your pc from malware. In other words, it detects, stops and protects your PC from Viruses.

Having an AV which only scans your computer and cleans it, is not sufficient ,because any pc which is connected to internet is in danger. So AV softwares should have a mechanism which prevents malware from intruding into the pc; and this mechanism is otherwise called as 'shield'.

Some AV softwares also refer to this shield as 'engine'.

Extra Information:-

Let me add some more information for you(assuming u aren't aware of).

Malware means any malicious softwares, which includes, viruses, worms, trojan horses etc. They usually spread through emails , internet user groups or LAN. So what these AV softwares do is, they have a shield/engine running constantly in system tray(startup), which monitors the incoming and outgoing files and scans for any suspicious activity. If they encounter any such malware, they immediately warn the user and side by side quarentine them.They basically impersonate security guards at the gate.

Hope this answers your question!

Glossary:-

AV=Anti Virus

malware=Malicious Software

System Tray=Bottom Right corner of ur comp. where programs show up.

LAN=local area network

What is protective shield in a antivirus software?live update

it simply monitors your browser and comp for suspicios behavier and deals with it acordingley some antivirus and anti spy sheildss take up alot of ram if your having problems try a different protection AVG anti virus and anti spy are free and dont take up a whole lot of you comps resources

What is protective shield in a antivirus software?norten

AVG anti-virus