Possibly just Round 2 of the massive DDOS from March: https://github.com/blog/1981-large-scale-ddos-attack-on-github-com https://github.com/blog/1981-large-sca

Possibly just Round 2 of the massive DDOS from March: https://github.com/blog/1981-large-scale-ddos-attack-on-github-com https://github.com/blog/1981-large-scale-ddos-attack-on-gith... http://arstechnica.com/security/2015/04/ddos-attacks-that-crippled-github-linked-to-great-firewall-of-china/ http://arstechnica.com/security/2015/04/ddos-attacks-that-cr...