In February, Web security firm Websense announced that CAPTCHAs at Google, Microsoft and Yahoo!
Other competitors in the technology sector include: Microsoft (MSFT), Websense (WBSN), and Oracle (ORCL).
Websense ( WBSN - news - people ) and SecureComputing, OpenDNS offers its service gratis.
Websense, a San Diego firm, helps businesses limit how much time workers spend on certain kinds of sites.
Unlike companies that filter the Web for a fee, such as Websense and SecureComputing, OpenDNS offers its service gratis.
You'll undoubtedly be excited to know that the Internet security firm Websense has recently released its annual Threat Report.
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Security firm Websense said it had discovered numerous websites that were using the flaw to infect a PC with spyware.
Researchers at SANS and security firm Websense, in San Diego, notified the Chinese Internet service provider and domain registrar hosting the computers with malicious software.
Another, spotted by Websense, spoofs an Amazon order confirmation email.
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Many companies use filtering software, produced by companies such as SurfControl and WebSense, which uses a watchlist of sites and stops employees reaching any website on the banned list.
"There's no guarantee that they are going to be able to get the offensive material out of the system quickly, " said Geoff Haggart, European head of filtering firm WebSense.
An application developed by a third-party developer might be easier to hack than the social networking site on which it runs, says Dan Hubbard, a researcher for the Web security firm Websense.
Researchers at SANS and security firm Websense (nasdaq: WBSN - news - people ), in San Diego, notified the Chinese Internet service provider and domain registrar hosting the computers with malicious software.
Ms. MICHELE SHANNON (Senior Director of Product Development, Websense, Inc.): What a lot of companies will do is they'll say, I'll allow you to go to your travel sites or your shopping sites, but what I don't want you to do is spend all day dong it.
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