'The data is quite basic - we want to know when user registered, where from (country), device type (helps us understand who uses Viber, detect problems, etc), UDID is an internal ID (not the Apple UDID), push token is used to communicate with users (but cannot be used by a 3rd party), etc. Information from one of these systems was posted on the defaced page.' 'The phishing attack allowed access to two minor systems: a customer support panel and a support administration system. 'Today the Viber Support site was defaced after a Viber employee unfortunately fell victim to an email phishing attack,' Viber told TechCrunch. The company confirmed to TechCrunch that indeed its Web site was defaced but that sensitive user information was not stolen. In May, it announced that it had more than 200 million users spread across 193 countries. Viber is an app that lets users call and message via Wi-Fi for free. Right after the breach, Viber's support page on its Web site displayed a banner that said 'Hacked by Syrian Electronic Army' and a note that said 'Dear All Viber Users, the Israeli-based 'Viber' is spying and tracking you.' As of this writing, the banner is no longer up and instead a '403 Forbidden' message is displayed.

The hacking group was claiming responsibility for both breaching Viber's database and defacing its Web site, according to The Hacker News. The Syrian Electronic Army sent out a warning over Twitter earlier Tuesday that said, 'If you have 'Viber' app installed we advise you to delete it.'

Viber for pc cnet