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Best Free Anti-Virus Software Updated November 28, 2007 If you are looking for the best possible protection my top recommendation is Avira AntiVir Personal Edition Classic [1]. Although its detection rate is outstanding there are some reservations. First it lacks email scanning; this is only available in the paid version. That means that AntiVir won't warn you about any infected emails before you open them. However should you open an infected email then AntiVir will still spring into action, so not having an email scanner doesn't mean you are not protected from email based infections. My second reservation is that AntiVir is quite an intrusive product - you will certainly be well aware of its presence. Finally AntiVir Personal Edition Classic has a time limited license. It is renewable but be aware you will have to periodically go through the hoops. If you not prepared to accept the drawbacks to AntiVir I would suggest either AVG Antivirus 7 Free Edition [2] or the Avast! scanner [3]. Neither is quite as effective in detection as AntiVir however they are both more complete products and less intrusive in use. AVG Free has been continuously refined since it was first released in 1991 and the latest version V7.5 makes further improvements to an already solid product. Additionally, it's relatively small, light on resources, has regular automatic updates and handles email scanning. There is a free and a pro version, the only difference being that the free version has a few non-critical features disabled and has no technical support other than a free user forum . Equally effective is the free Avast! scanner [3] though its funky media player style interface is not to everyone's taste. Avast! also required periodic re-registration while AVG does not. However Avast! does not seem to suffer the signature file update problems that plague some AVG users. AVG and Avast! are excellent free products that will meet the needs of most users. However none of these offer the best malware detection available. That title belongs to commercial products like NOD32, F-Secure, the full versions of AntiVir, Kaspersky AV and others. They are however capable packages that offer the financially challenged a real alternative to the major anti-virus suites. However if you use AVG or Avast! in conjunction with a sandbox for surfing (see section 4) and an anti-spyware product (see section 3) you can achieve a level of protection approaching that offered by the best commercial AV products. Further improvement is possible running regular on-demand scans with a different anti-virus product. On-demand scans should be run regularly, at least weekly, to check for viruses and other malware that may have been missed by your main scanner. A good option for on-demand scanning is the free version of the commercial AV product BitDefender [4]. It's a first class product with excellent detection rates but as the free version lacks an email scanner and a resident virus guard, it's only really suited for use as an on-demand scanner rather than your main AV product. There are some other limitations as well. First it has an annoying habit of detecting malware products that have been quarantined by other security products and you can't exclude these areas from subsequent scans. Second, it is only available on a one year non-renewable license.
翻译：如果您寻找最好保护，我的最好推荐是Avira AntiVir个人版经典之作。 虽然它的侦查率是卓著的，但是有某种程度的保留——首先它缺乏电子邮件扫描; 这只有有偿的版本。 这意味着antivir不会警告你对任何被感染的电子邮件之前，你打开它们。 然而如果您开放被传染的电子邮件然后AntiVir将投入行动，不如此有电子邮件扫描器不意味您没有被保护免受电子邮件基于传染。 我的第二保留是AntiVir相当是一个闯入产品-您一定很好明白的它的存在。 最终AntiVir个人编辑经典之作有时间被限制的执照。 它是可更新的，但是知道您周期性地将必须审阅箍。 If您没准备着接受缺点到AntiVir我会建议AVG抗病毒7自由编辑[2]或Avast! 扫描器[3]。 都不是相当一样有效的在侦查然而，象AntiVir他们是更加完全的产品和较不闯入在使用中。
自由的AVG连续地被提炼了，自从它在1991年首先被发布了，并且最新的版本V7.5做进一步改进对一个已经坚实产品。 另外，它是相对地小的，点燃在资源，有规则自动更新并且处理电子邮件扫描。 不有一个自由和一个赞成版本，是唯一的区别自由版本有失去能力的一些个不重要的特点除一个自由用户论坛之外，并且有技术支持。
有效的Equally是自由Avast! 扫描器[3]，虽然它质朴的传媒播放装置样式接口不是对大家的口味。 Avast! 也需要的周期性再登记，而AVG不。 Avast! 不似乎遭受困扰某一AVG用户的签名文件更新问题。 AVG和Avast! 是将适应多数用户的需要的优秀自由产品。 然而这些都不提供可利用最佳的malware的侦查。 那个标题属于象NOD32的商品， F安全， AntiVir的充分的版本， Kaspersky AV和其他。 然而他们是为主要抗病毒随员提供财政挑战一个真正的选择的可胜任的包裹。 However，如果您使用AVG或Avast! 与冲浪的一个沙盒一道(参见第4)部分和反spyware产品(参见第3)部分您可能达到接近那的保护的水平提供由最佳的商务AV产品。 Further改善是可能的连续正规兵在要求时扫描与一个不同的抗病毒产品。
应该跑On-demand扫瞄通常，至少每周，检查也许由您的主要扫描器丢失了的病毒和其他malware。
在要求时的扫描的A好选择是商业AV产品BitDefender [4的]自由版本。 它是与优秀侦查率，但是，当自由版本缺乏电子邮件扫描器和常驻病毒卫兵，它的头等产品真正只适用为使用作为一台在要求时的扫描器而不是您的主要AV产品。 有其他局限。 首先它有查出由其他安全产品检疫的malware产品讨厌的习性，并且您不可能从随后扫瞄排除这些区域。 其次，它只是可利用的在一个一年不可更新的执照。
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发表于 2008-1-19 23:17:26
服了楼上的解释！
发表于 2008-1-20 00:57:04
