Google agreed to acquire email security company Postini Inc. for $625 million in cash.
Postini is one of a host of small companies that offer Web-based services to help businesses clean their email of spam, viruses and other software-related pro
Spammers have cracked the captcha mechanism Gmail uses to make sure you are a human before you can open an e-mail account, leading to a huge increase in the amount of spam sent from Gmail last month, security firm MessageLabs says.
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