Truecaller Hacked?

The hackers seem to have obtained more than a million Facebook, Twitter, LinkedIn, Gmail accounts which will allow the hackers to post to the hacked accounts, reports eHackingnews. It's also being learned that the outdated WordPress version running on the site allowed the hackers to get access to the admin panel.
I'm tagging Alan Mamedi ( #-Link-Snipped-# ), CEO of Truecaller to tell us more about the hack and what really went wrong? We'd also be interested in knowing how's Truecaller addressing the issue at present.