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When a small padlock appears in the corner of your Web browser’s address bar or the entire bar turns green, it seems like a powerful signal you’re safe to proceed. But experts say the SSL certificates those green lights signify — digital stamps of approval that Web sites buy to prove they’re running a legitimate business and can send and receive encrypted data safely — don’t provide the safety they seem to. "They instill some sense of security, but that could be a dangerously false sense of security," said Paul Mutton, a researcher with UK-based security firm Netcraft Ltd. The site itself could still be riddled with security holes for hackers to exploit. And the certificate could simply be bogus: Criminals have been forging them to get the padlock icon and dress up fraudulent sites.
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During the Web’s heyday, a profitable Internet company nearing $100 million in annual sales while luring a million new customers a month would have found itself on the IPO fast track. But that’s hardly the case for LinkedIn, a professional networking site that has cleared those hurdles and then some. Instead, LinkedIn is hewing closely to the Web economy’s new motto on initial public offerings: Easy does it. Founded in 2003, LinkedIn may not sell shares until some time next year. Likewise, social networking site Facebook, worth $15 billion on paper, may not go public until 2010,
