The Syrian Electronic Army, a hacker group that backs the Syrian regime and Assaad, has claimed responsibility for attacks today on the NY Times, the Huffington Post and on Twitter.
The NY Times acknowledged they were undergoing an external attack:

The following picture showed when you tried to access the Times site, possibly a redirect:

The SEA claimed responsibility:
Media is going down…. | http://t.co/Gd1zB70v0g | http://t.co/8NUe7Cs2jm | http://t.co/QDdNdEuuVX | http://t.co/W9nmxo95PQ
— SyrianElectronicArmy (@Official_SEA16) August 27, 2013
They also tweeted about grabbing Twitter’s domain.
