08
Marriott International
SIZE : 500 million guests DATE : November 2018
Talk about playing the long game . Hospitality giant Marriott International announced that hackers had stolen data on 500 million Starwood hotel guests in November 2018 , but the hackers had entered the Starwood system ( in 2014 ) before it was even acquired by Marriott ( in 2016 ). As well as the usual contact information , credit and debit card details were also included in the hack .
07
Yahoo
SIZE : 500 million accounts DATE : 2014
This is not the only time you will see internet pioneer Yahoo on this list . This time around , ‘ just ’ 500 million accounts were compromised by what Yahoo called a ‘ statesponsored actor ’. Personal data included names , emails , phone numbers , dates of birth , security questions and answers . Yahoo only acknowledged this breach in 2016 . cybermagazine . com 113