Cathay Pacific data breach affects more people than Hong Kong's population

Cathay Pacific Airways Ltd. said a hacker accessed personal information of 9.4 million customers, becoming the target of the world’s biggest airline data breach.

The airline’s shares sank the most in almost two years, shaving $201 million off its market value, after the Hong Kong-based carrier disclosed the unauthorized access late Wednesday, seven months after discovering the violation. While passports, addresses and emails were exposed, flight safety wasn’t compromised and there was no evidence any information has been misused, it said, without revealing details of the origin of the attack.

“This is quite shocking,” said Shukor Yusof, founder of aviation