Alexa.com, whatsapp.com and redtube.com domains have been defaced in the last days. The domains all had an very recent update record in their DNS, and they were all using the same DNS registrar Network Solutions, LLC. All domains that was attacked yesterday and today only had the status: clientTransferProhibited while the domain alexa.com who was updated 10 September 2013 also had additional server settings enabled. If this is related to the attack is very difficult to say.”]
Source: https://securelist.com/hackers-target-high-profile-domains/57322/