Windows 7 Milestone 1 Build 6519 Leaked
It was clear that a release of Windows 7 would sooner or later make its way into the dark side of the Internet. Windows 7 Milestone 1 with the buld number 6519 was released on June 11th by a group calling themselves The Microsoft Beta Project. The nfo file, a sort of readme text file states that the downloads has a packed size of 3.1 Gigabytes and that it will fit on one DVD after uninstallation.
The group created a crack to defeat the WGA protection of the Windows 7 build. Microsoft is apparently shipping the Windows 7 test builds with WGA protection, probably to reduce the chance that a leaked release will be useful to downloaders. The crack uses a combination of file replacements, modifications and the bios time to fake the validation.