Botnets descend from the skies

The next time you visit a city park, you might want to be wary of the hipsters in charge of cool-looking remote-controlled helicopters. They could be botmasters aiming to wage a cyber attack via the smartphone in your pants.

“The coolness factor is actually an attraction for attacks,” Sven Dietrich, a computer scientist at the Stevens Institute of Technology in Hoboken, N.J., told me Friday.