March 23, 2004 Hotmail, Yahoo Users at Risk of PC Takeover By Ryan Naraine A potentially serious security flaw found in Web-based e-mail services offered by Microsoft (Quote, Chart) and Yahoo (Quote, Chart) could put millions of PCs at risk of takeover, an Internet security research firm warned Tuesday. Israel-based security consultants GreyMagic issued the advisory with a chilling warning that attackers could inject malicious code by simply sending an e-mail to an unsuspecting Hotmail or Yahoo user. The vulnerability only affects Hotmail and Yahoo running on Microsoft's Internet Explorer (IE) browser. "When the victim attempts to read this email,...