After Buying Starwood, Marriott Didn’t Spot long-running Breach for 2 more years. Breach began with Starwood’s “guest reservation system” in 2014, but went undetected until 2018. Marriott acquired Starwood and its network of hotels – including the Westin, Sheraton, and W brands – in 2016. Once you buy it, you own it. The case stands as “a salutary lesson of the need to keep data safe,” says Jonathan Armstrong, a partner at London-based law firm Cordery.”]
Source: https://www.govinfosecurity.com/blogs/marriott-breach-takeaway-ma-cybersecurity-challenge-p-2964