https://phys.org/news/2018-11-cathay-apologises-breach-denies-cover-up.html

The pair were summoned to the city's legislative council to explain to lawmakers why it had taken five months to admit it had been hacked and the data of 9.4 million customers compromised, including passport numbers and credit card details.

Lawmakers slammed the delay as a "blatant attempt" to cover up the incident and thereby deprive customers of months of opportunities to take steps to safeguard their personal data.