Thanks to FReeper amigatec for the heads-up!!
Hard to believe they ran it out over a network without some alarms going off -- sounds like somebody loaded a NAS and snuck it out after "working late".
"Shared Source Initiative", eh?
"Three people can keep a secret -- but only if two of them are dead." -- Some Wise Guy
Open source Windows at last!
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Here for an article downplaying this incident:
http://windowscentral.com/tiny-bit-windows-10-source-code-has-leaked-online