We know more about Windows 10 now, including how many versions will be provided, but still not when. In Short Circuits: I received a firm reminder of how sneaky phishing messages can be, the United States continues to be the largest supplier of e-mail spam, and after several years of rapid growth tablet sales are off a bit this year. In Spare Parts (only on the website): Look who's the biggest threat to corporate data, China plans to spend more than $200 billion in the next couple of years to improve Internet speeds, calls to implement a Canadian anti-piracy program in the US, and RadioShack receives permission to sell its name.