Confidential information about United Airlines’ top corporate clients has been leaked on to the internet.

A blogger posted a picture of a promotional poster created by the airline that showed that Apple is its biggest corporate customer, with the tech giant booking a staggering 50 business class seats a day on its No. 1 route alone – San Francisco to Shanghai, spending $150 million each year on flights, with San Francisco to Shanghai accounting for $35 million, or 25 per cent.

The next biggest corporate clients according to the poster are Deloitte, McKinsey and Company, Cisco, Applied Material, PWC and Oracle, as they all spend between $12 million  and $17 million with the airline.

Companies spending over $10 million are Intel, Visa and Chevron, the poster claimed.

Read more at The Daily Mail.