This happened back in October a couple of days in a row. Who the heck is targeting Github and why? I wonder if these attacks are related to the Chinese hacking attacks that have been publicised lately?
Hm, I don't think it fits the pattern. The most reported Chinese hacking was about espionage, not bringing down websites. Most of the time, DDOS is either related to politics (newspapers, federal agencies etc.) or related to blackmailing (most likely in the case of GitHub. This of course, does not mean that the hacker is NOT sitting in China. But she could be placed everywhere else just as likely.
Github either pissed someone off, or it's about "street cred".
I was interviewing a candidate about a year ago. Who bragged to me that he hacked the North Broward Hospital District.
And I was like, "why would you hack a hospital?"
His answer, "It was there."
I was dumb-founded. I mean I hired him, but still. :)