The Guardian has an article on how the CAA has learned from the collapses of XL and Monarch,
Also this...
It also risked precipitating the very thing the CAA hoped to avoid: a collapse in consumer and investor confidence in the airline. In a world of flight-tracking website and social media, hopes for complete secrecy were faint once Matterhorn had kicked in.
“We monitor those sites,” said a CAA spokesman. “And on Friday afternoon I could already see a rumour forum talking about unusual flights in Malaysia, and someone said, [it] must be the CAA.”