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HERE HERE!!! I love avast. I use it on my WHS and all my machines. I also give it to my pc clients when they don't have antivirus or their version is expiring or expired. The free edition is great and the professional is even better.
My wife bought a copy and aside from the fact that it adds a firewall (already really have that built into Windows) and one or two other features, I really don't see the big advantages of the pay version.
It also has script blocking. So if a script is a little nasty on a website it will catch it. I do like the fact that the free edition is perfect for general users. It isn't crippleware or time limited. If you need the extra protection then you can buy it.
Apart from NOD32 breaking quite a few systems following a false positive the other day. I don't claim them to be better or worse than the competition, just pointing out that they are as fallible as the rest of them.
I think it's better to make a list of important factors, for example (not reducing the computer speed, good support, being up to date, the size of update patches ( for low bandwidth clients ), . . .) then arrange them according to importance. then you will find one.
I use kaspersky for my whole company, it doesn't reduce the computer's speed, updates everyday, and you can set it to update every client. but according to Avira and Avast the update patch size is big.
Also you can buy kis, so that it provide you the whole solution ( internet security and antivirus ).
the interface is user friendly and you can set every small detail like a Network Pro.
I used Norton for all my System and Malware tools. After the 360 products performance issues, I was bumped off the band wagon.
I now use one product as the Resident Shield and several others for periodic checks. I have not found one product to be adequate for everything. They all have some infection definition patterns in common but others that differ. Some are better at Trojans or Worms than others. Some are better at rootkits. Some seem to catch new viruses better than others, etc. Scans with several products find Malware that one product alone does not.
Experience has shown me that your needs can be determined by some of the following factors, at least:
. What is your OS (Windows, Linux, ...)
. Where are you located (USA, Europe, Asia, Down-under, ...) (the Internet is not as ubiquitous as we think)
. Where does your traffic, such as email, come from primarily ( " )
. What sources does your Malware vendor use for definitions.
I have some clients that are in the USA but have the bulk of their email exchanges with Overseas companies. They seem to get the new exotic Malware sooner than other companies.
We tried quite a few packages and found AVG was the best for them. This may not be true for other companies that are technology oriented, perhaps developers, and have traffic concentrated in the USA or one other country.
This company has a fairly independent assessment of Malware products: <a href="http://malwareresearchgroup.com/">http://malwareresearchgroup.com/</a>[<a href="http://malwareresearchgroup.com/" target="_blank" title="New Window">^</a>]
Malwarebytes and StopZilla seem superior for Trojans and Worms. Spyware Doctor and some others seem most comprehensive but take more CPU cycles if they are resident. I suggest some trials for your specific system. Most of the vendors above have free versions and/or trials. Don't be surprised if you find new Malware that your scanner has been missing prior to now.
If you have another product that is the Rosetta stone of Malware protection please share.
One big thing: Kaspersky doesn't seem to have allegiance to Microsoft or any other companies. A full system scan actually shocked me by reporting all the problems with standard software from all the large software houses.
Too, even though I only use the AntiVirus version (instead of the more-comprehensive Internet Security version), I have been warned about Internet sites far more often and feel I have much more browser protection than Symantec Internet Security would ever catch.
I also think it runs faster than anything I've used. Friends that have used just about everything are quite happy with Kaspersky.
No, I don't know if it's the best and I've certainly performed no testing but I am firmly in their corner.