New York is facing an unusual incarnation of Denial of Service, in this case public transport. Just like on the web, thats’s extremely annoying and in this case, really has impact on peoples’s lives. From the article:
“The reports caused major disruption,” says Wikipedia, “affecting approximately 140,000 passengers and 1,000 flights.”
Asymmetric warfare: someone is pulling emergency brakes on NYC subway cars
Source: Asymmetric warfare: someone is pulling emergency brakes on NYC subway cars / Boing Boing