We're familiar with DDoS attacks, which are "Distributed Denial of Service" attacks, but there's a new form of attack that's been happening online lately. It's called PDoS, or "Permanent Denial of Service," which actually bricks the device, destroying it permanently. The rationale is that if these devices weren't bricked, someone else would use it for a DDoS attack.
Last week, Chinese hackers targeted GreatFire.org in a DDoS attack, and now are attacking GitHub. DDoS stands for "Distributed Denial of Service," and this attack brings down a website by hitting it with lots of bogus requests from thousands or even tens of thousands of computers distributed all over the world. GreatFire.org was spending $30,000 a day in bandwidth trying to keep up with the excess traffic.
The way they are getting this to be a distributed attack is by commandeering users of Baidu, a popular search engine in China.