Meanwhile: Cisco patches a router application flaw, a Washington law firm sues IBM over a server attack; and spammers sucker Web surfers with fake Vladimir Putin death reports.
Update: The exploit might be tied to an older flaw in Excel. Attackers who exploit the serious flaw could launch arbitrary code. Microsoft says it is investigating.
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Microsoft will no longer offer extended support or issue security updates for Windows 98 and Windows Millennium Edition operating systems that are still being used by tens of millions of people.
Secure Computing is buying messaging security vendor CipherTrust for nearly $274 million. The move is intended to strengthen Secure Computing's unified threat management program.
Meanwhile, Adobe fixes security flaws in Acrobat and Reader while Juniper Networks fixes security flaws in its JUNOS program running on M-series, T-series, and J-Series routers.
FrSIRT says holes in Microsoft's spreadsheet program and Adobe's media player could allow attackers to take control of affected machines and initiate malicious commands.