Mac users, beware.
Computers running Apple's Mac OS X software have traditionally escaped many of the attacks that hit PCs. But that may no longer be the case with the first instance of Macs getting hit by "ransomware," or software that clogs up your system until you pay to have it neutralized.
We also look at a coalition of companies looking to save the reputation of the hoverboard and honor the late Ray Tomlinson, the father of email, by discussing the impact that email has had on our lives.
The 3:59 gives you bite-size news and analysis about the top stories of the day, brought to you by CNET executive editor Roger Cheng and CNET senior writer Ben Fox Rubin.