Perfect Optimizer

What is the best anti-virus and anti-spyware/adware free or premium?

By the best,i mean which has the best detection rates.

You need anti-virus protection with real-time protection (shields). One that is up to date and able to receive virus definitions every day. Here is where you can read about the best commerical anti-virus programs: http://anti-virus-software-review.toptenreviews.com/ . You should have only one anti-virus program installed on your computer. Because anti-virus programs have real time protection more than one can cause conflicts and not work as well. And you must have one to protect your computer at all times. You can safely use online virus scanners to supplement your main anti-virus program. Here is a link for some free online scanners:

http://www.johannrain-softwareentwicklung.de/e_online_antivirus_scan.htm

If you cannot afford to pay for an anti-virus protection then you should get one of the free anti-virus software available. They are not as good as the commercial ones but still can do a good job and are very necessary. You can read about the free ones here: http://www.techsupportalert.com/pc/Security-tools.html . Look under “ Best Free Antivirus Software.”

But anti-virus protection is not enough. You also need anti-spyware protection that has real time protection. One of the top rated commercial ones is Webroot Spy Sweeper. Two of the best free spyware scanners are Malwarebyte’s Anti-malware and SUPERAntiSpyware. These will not have real time protection that commercial ones do. But you would use them to scan. You should use at least 2 free ones that do not have the real time protection. If you have a commercial anti-spyware program you can still use a couple free ones without real time protection to supplement. You can find free anti-spyware programs on the same link as above but look under “Best Free Adware/Spyware/Scumware Remover.”
On the same link you can look into free trojan scanners too. The best commercial one is Trojan Hunter.

One last important note. Often free security programs have to be manually updated while the commercial ones have automatic updates. It is vital that you keep your security programs up to date with the latest malware definitions.

Malware Adware Spyware Remover Removal – Malwarebytes Anti-malware Free Download