Two New Services Try to Warn You About Sleazy Sites
The World Wide Web is a marvelous thing. Because it exists, more people have direct access to more knowledge than at any time in history. But, by linking people everywhere, the Web has also spawned a new international criminal class, and a related class of sleazy businesses.
These creeps now find it easier than ever to defraud people, steal their identities and blast them with unwanted or false advertising. They use the Web as a pathway to infect computers, corrupt data and take over others' machines.
Security software can help block this wave of woe. But it would be better to know in advance if a Web site that comes up in a search result, or one you arrived at through other means, is harboring malicious software, or perpetrating scams, or generating spam and unwanted pop-ups. It might also be nice to know if a site with an innocuous name contains pornography, hate speech or other content that might be offensive to you.
I've been testing two services that aim to provide such advance notice of bad or offensive sites. The services, Scandoo and SiteAdvisor, take different approaches to the task and offer different features. But both instantly mark up a search-result page, and label the links that might be dangerous.
Both services are free of charge, and each works on both Windows and Macintosh computers, and in multiple Web browsers. On balance, I prefer SiteAdvisor, though Scandoo has a couple of things SiteAdvisor lacks.
Scandoo, still in beta, or test, phase, is from a company called ScanSafe, which provides site-scanning and security services for corporations. SiteAdvisor was founded by some engineers from MIT and was recently bought by McAfee, the big computer-security firm.
SiteAdvisor works via a software plug-in that you download and install. The plug-in, available at
www.siteadvisor.com, modifies either the Internet Explorer browser for Windows, or the Firefox browser for Windows, Macintosh and Linux, so the browser can identify bad Web sites. SiteAdvisor works with the Google, Yahoo and MSN search engines.
Scandoo requires no software downloads and works with more browsers than SiteAdvisor does. But it requires you to enter a search term at its Web page,
www.scandoo.com, rather than at the home page or search box of your favorite search engine. It then transfers to the search engine you choose and modifies the results page to identify sites that may be troublesome. It now works only with Google or MSN.
There are some other major differences between the two. Scandoo scans Web pages on the fly to look for bad stuff. SiteAdvisor matches Web sites against a database it has compiled about content. Scandoo works only on pure search results, not the ads alongside the results. SiteAdvisor rates the results and the ads, which often are more dangerous.
In addition, because it is built into the browser, SiteAdvisor can rate any site you are visiting, not just sites listed in search results. SiteAdvisor places a small, unobtrusive icon in your browser. The icon is green if you are on a Web page it considers safe and honest. It turns red if it regards the site as dangerous.
Scandoo works only on search results pages. But it has a function SiteAdvisor lacks. It can rate pages for offensive content, while SiteAdvisor focuses just on the presence of malicious software, or invasive advertising techniques. Scandoo allows you to specify which kinds of content you want flagged, including pornography, hate speech and gambling.
SiteAdvisor also flags sites it regards as perpetrating scams, like charging people for software that actually is free. But in my tests, it ignored some other scams, such as offers for pills that magically enlarge body parts.
In my tests, SiteAdvisor consistently flagged more Web sites as bad than Scandoo did. When I searched for "Free iPods" in Google, Scandoo gave all the regular search results a green check mark, meaning OK. SiteAdvisor marked the first regular result in red and gave it an "X," meaning trouble. It also marked most of the ads in red and gave them "X's."
This is partly due to different techniques they use. Scandoo claims its real-time scanning can uncover bad sites SiteAdvisor might miss. SiteAdvisor claims its database is more comprehensive.
Another reason for the disparity is that SiteAdvisor isn't just looking for viruses or spyware. It uses test computers to see if sites are likely to generate what it calls "spammy" email or pop-up ads. If they do, the sites get flagged.
Some might regard SiteAdvisor's filters as too aggressive, but, unlike Scandoo, it gives a detailed explanation for each rating. The explanations I saw made sense. For the free iPods site SiteAdvisor flagged, it explained: "After entering our e-mail address on this site, we received 11 e-mails per week. They were very spammy." It even showed some test emails.
Both services are very helpful. You might want to use Scandoo if you're concerned about offensive content. But for flagging malicious software and invasive advertising, SiteAdvisor is more comprehensive and tougher.
预警垃圾网站的网络新服务
互联网真是一个绝妙的东西。由于它的存在，更多的人能够直接获取更多的知识，这是人类历史上的其他任何时期都无法比拟的。但是，在把世界各地的人们联系在一起的同时，互联网也催生了新的国际犯罪种类，以及与此相关的肮脏的行当。
坏人们如今也意识到，欺骗他人、盗窃他人身份以及用各种不请自来的广告或虚假广告来伤害别人比任何时候都容易。他们利用网络作为平台，四处散播电脑病毒、摧毁数据，侵入他人的电脑。
安全软件可以帮助用户阻挡这些问题的发生。但是在人们通过搜索或者其他途径找到某个网站时，如果能够事先知道这个网站是否有恶意软件、诈骗内容，或者会不会产生垃圾邮件以及用户不想看到的各种弹出窗口，岂不是更好。另外，如果能够提前知道一个名字普普通通的网站是否包含淫秽内容、仇恨言论或者其他可能会冒犯你的内容，也不错啊。
我一直在测试两种新服务－－Scandoo以及SiteAdvisor，它们都可以就不良网站或含有攻击性内容的网站提前发出提示。这两种服务采用不同的方法来实现这个任务，并且提供不同的功能。不过，街址
