This thread is currently "under construction", and will be edited for the remainder of today. Please excuse any blank spaces or crossed-out "placeholders" for items expected to be announced.
Today is Microsoft Tuesday --- the SECOND Tuesday of the month --- on which Microsoft is expected to release its monthly cycle of Windows security updates. Based on previous history, they should become available at 1 P.M. [USA - Eastern DAYLIGHT SAVING Time]
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Please use Windows/Automatic Updates to determine which updates are applicable to your particular system.
For more information, see https://portal.msrc.microsoft.com/en-us/security-guidance/summary
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Adobe will be joining-in, with updates for Flash.