Viber was blocked last week for non-compliance by The government of Saudi Arabia. Now they may move to block Skype and WhatsApp in the coming weeks, if the U.S. based messaging provider fails to comply with requirements set by the country’s telecom regulator. CITC confirmed that they could take the nasty step even before the holy month of Ramadan that commences on 9 July. The main issue seems to be that such channels bypass Saudi’s communications monitoring capabilities and consequently do not conform to local regulations.
Source: https://thehackernews.com/2013/06/after-viber-saudi-arabia-threatens-to.html