Internal beta builds of Microsoft's forthcoming Service Pack 1 for Windows XP are finding their way onto the Internet thanks to some unscrupulous employees. Although public betas almost always leak to the Web, in the past Microsoft has been mostly successful at keeping private builds it issues to internal Redmond workers secure. But since SP1 build 1050 shipped to beta testers, unreleased builds 1060, 1063 and 1065 have cropped up on underground Windows sites.

These private builds usually contain few updates from public releases and are generally less stable, but that hasn't stopped hordes of enthusiasts wanting to run the latest XP code. Weighing in at over 100 MB the service pack isn't light on bandwidth, either.

Microsoft faced a similar problem two years ago when internal alpha builds of Windows XP, then code-named Whistler, leaked onto the Internet from Redmond labs. The breach prompted the company to change its policy of how Microsoft-only builds are distributed. Such leaks not only allow competitors to sneak a peek at what Microsoft has up its sleeve, but also give the general public a wrong impression of the final product, because internal releases are by nature incomplete and bug-laden.

BetaNews.com