Windows OS had Windows Defender, which is a built-in antivirus protection program. But this might not be enough to protect your PC. It is always a good option to have a 3rd party antivirus software, like for example Comodo antivirus, which has defence barricades and is made based on auto-sandboxing technology.
Best Antivirus protection software available are:
1. Comodo Free antivirus
2. Avast Antivirus
3. McAfee antivirus
When shopping for your anti virus software, you should make sure that it contains protection against these dangers and includes regular updates. One of the many antivirus systems currently available is Security Shield 2009.
It provides essential virus protection from viruses, hackers, and privacy threats. Powerful yet easy to use, protect yourself, your family, and your PC online with Security Shield 2009. When a virus breaks out, '''Security Shield 2009 will provide a patch within 2-3 hours and a fix for the virus within 5 hours. You can set your computer to update viruses weekly and run a complete virus scan.'''
You can have a try! http://www.sharewarerating.com/security-shield-2009-total-internet-security
I would try one of these: antivirus and firewall software
Answer
You should not be trying to use more that one anti-malware program at a time. This is because the two programs may interefere with one another, leaving you even more vulnerable. Therefore, you must choose one program to use. Now there are many programs to protect against malware (malcious code). Malware has many types but to name a few; viruses, spyware, adware, rootkits, trojans and worms. I recommend you use Avast Free Antivirus. Remember regardless of what you choose only install one anti-malware program. If you don't choose to use Windows defender either disable it or uninstall it. That way it doesn't interefere with what ever program you choose to protect yourself.
Due to certain unfortunate circumstances, at one point I still decided to think about a reliable universal protection method for my PC from various scammers. For a long time I chose among various free programs until I came across the best utility of this kind - IObit Malware Fighter.I like the fact that the program really works all the time and scans the computer all the time and all possible ways of penetration of malicious elements, whether it be a browser or removable media. At the same time, the program helps a lot with annoying advertising on the Internet. In my opinion, the best of its kind among all other free analogues. And yes, It has version, suitable for Windows Vista.
AVG is one of the world's most recognizable names in online threat protection with more than 200 million active users counting on AVG every day for their protection, performance, and privacy. Safely surf, email, shop, bank, use social media online & more! cutt.ly/jkpcrKB
You can try any of the software in the sources and related links(below).
While "best" is very subjective, I have run Avast! for almost a year now, with very satisfactory results.
Some good antivirus software packages for Windows Vista include: AVG, Norton Antivirus, NOD32 or NOD64, BitDefender Antivirus Plus, and G Data Antivirus.
AVG Free
A person can purchase an antivirus for Windows Vista at a store that sells various computers and computer programs or online. Some online sites that sell antivirus software for Windows Vista include eBay and Amazon.
The best would have to be AVG. It is fully compatible with any version of Vista and its security is top notch. (This is not my opinion, im going on compatibility and effectiveness).
The best thing to do is Buy Anti Virus software. You can always Restore your Computer to a recent version if your on XP or Vista. Vista makes Restore and Recovery the easiest
One can download Microsoft antivirus software directly from the Microsoft website. It is a matter of personal opinion which software is considered the best.
This is a serious infection that needs to be removed by a professional. It is not legitimate security software.
There are many companies that provide free antivirus software downloads. Avast, AVG, Avira, and McAfee are a few examples of who provide the free software.
For me i use norton antivirus i think IS the best software antivirus i download it from this lik exe.io/Nortondeal For me i use norton antivirus i think IS the best software antivirus i download it from this lik :exe.io/Nortondeal I choose the annual subscription and i have a coupon if you Want use it (N360LIFELOCK50)
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Bull Guard Antivirus software is compatible with Windows operating systems, such as Windows 8, Windows 7, Windows Vista and Windows XP. For more information, the best place to try would be the official website of Bull Guard.
Malwarebytes for Business
The best antivirus software wil be software that you can custom tailor to your needs. I would choose the software available at www.Norton.com.
There are many sites where one can find the best free downloadable Antivirus Software. Some of them are Microsoft Security Essential, Avast Free Antivirus, AVG Anti-Virus Free and Avira Antivirus Free.