The New York Times main website and corporate website, mobile apps & email system have being brought down possibly the result of a cyber attack. Around 4.30pm, the site went down with tweets from the times saying it was “experiencing technical difficulties.”
Emails sent to New York Times email addresses were bouncing back as undeliverable. Fox News has reported that the outage was due to a cyber attack, with sources revealing that outside security professionals had been brought in to assess the threat. The New York Times has been victim to cyber attacks in the past.

Update 15th August 2013 : New York Times claim outage was due to a server crash and not a Cyber Attack