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Category: Security
Type: Question
Author: Scotty
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In many recent time's antivirus I have observed a protection system called real-time scanning system.

I have used Norton 360, Norton internet security 2009, Norton Antivirus 2008, Eset NOD 32 4.2 and Eset Smart security 4 in all those antivirus software I have seen that this real time scanning system is available.

My first question is that what is the main function of this Real-time file scanning system?

What is the main difference between the normal scanning system and the real-time scanning system?

How it protects our computer?

Why the name real-time scanning is used to define this part of the software?

What is the difference between firewall or filters with this real time scanning system?

If my antivirus database is not up to date then can this real time scanning system help my PC against Virus attack?

If not then is there any other way to use it against virus attack?

Or do I have upgrade the Antivirus Database?

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# Comment Id: 11822

Anti-Virus software is an application that prevents malicious programs, also known as virus that affects our PC. These viruses (also known under different names Trojan, Malware, Spyware, Blaster worm etc. according to its type) if not blocked right at the entrance might cause further harmful effects to your PC. These malicious programs can sneak into your PC as harmless file, however when it propagates its true color, It can completely paralyze your PC. You may be able to revive your PC, but maybe not those data that are dear and precious to you.

To prevent such harmful virus that evolves from day to day, just anti-virus software is not sufficient. It cannot fully combat the latest PC security threat available today. Therefore, just installing an anti-virus program does not mean that your PC is safe from such security threats.

Updating the software (anti-virus) with the latest virus definition is very much essential in order to let it fight with the potential threats that might compromise the smooth functionality of your PC. Without such updates, it is like having a gun without any bullets in them. These updates which are commonly known as anti-virus updates has virus definitions, those that can recognize the malicious codes that might affect the functionality of your PC.

Now, coming to the Real time scanning that you have often seen in the anti-virus software that you have used, is within the software and enables it to scan the system for potential threat on its own, automatically. It is different from the manual scanning in a way that with the former, you need not click on any button within the software to launch the scan. It runs on its own once you install the software.

Therefore, without having the latest virus definitions from the anti-virus software updates, you anti-virus software won’t be able to detect malicious code even if it scans the whole system. In other words, your anti-virus software or the security software does not have the necessary virus definitions to identify the malicious code that might be hiding within your PC.

By the way, when you run an update for your anti-virus software, it syncs with the developers database (anti-virus manufacturers).

Finally, Firewall within anti-virus software is like a fence within your household. It monitors both the incoming and the outgoing data from your PC. Most of the internet security software, for e. g. KIS ( Kaspersky Internet Security), NIS (Norton Internet Security) has built-in firewall in them.

# Comment Id: 19099

Hi Scotty,

Real-time protection is also referred as on-access scanning, background guard, resident shield, auto protect provided by most antivirus, anti spyware programs, which is generally their most important feature.

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 is coming into the computer (for example when inserting a CD, opening an email etc). This means at the same time when you are preparing the files for use, you can also able to scan in for viruses and other malware