Git, the open source distributed software version control system pioneered by Linux founder Linus Torvalds in 2005, is now gaining real momentum with developers. But don't count out rivals like Mercurial and the still-dominant Apache Subversion platform.

Cloud computing must be green. After all, those who provide cloud computing technology say so, most cloud advocates say so, and even those who check up on such things say so.

By now, you’ve heard that ARIN has (more or less) run out of IPv4 addresses and the time has come for mass migration to IPv6. If you are a Windows shop, the good news is that Microsoft has been preparing for IPv6 for years and almost all of the latest Microsoft wares support it. Some, such as Windows Server 2008 R2, depend heavily on it for certain features.

Thanks to their native security and management capabilities, as well as a wide selection of mobile device management tools, most businesses now let employees choose among several smartphones -- typically iPhones, Androids, and BlackBerrys -- in addition to iPads and emerging Android tablets.

Oh how I long for the days of hackers simply cracking password hashes. Defending against that technique required only three steps: First, protect your password hashes from being stolen. Second, use strong password hashes. Third, make your passwords long enough to prevent easy cracking.

These days, cracking password hashes is passé. Today's hackers are all about pass-the-hash (PTH) attacks. With PTH attacks, the bad guys steal the hashes -- either from the password-hash-storage databases or from memory -- and reuse them to create brand-new authenticated sessions.

Git, the open source distributed software version control system pioneered by Linux founder Linus Torvalds in 2005, is now gaining real momentum with developers. But don't count out rivals like Mercurial and the still-dominant Apache Subversion platform.