As part of its monthly patching cycle, Microsoft on Tuesday plans to release three security alerts for flaws in Windows and Office. Two of the security bulletins apply to Windows, and at least one of them is deemed "critical," Microsoft's highest risk rating, the company said in a notice posted on its Web site Thursday. Its Office productivity suite will get one bulletin, also rated critical. The notice did not specify whether one of the patches will be for Internet Explorer. Microsoft earlier this week offered a workaround for a known flaw in the Web browser that opens the door...