Hotel chain Marriott disclosed today a security breach that impacted more than 5.2 million hotel guests who used the company's loyalty app.
According to abreach notification posted on its website, the hotel chain learned of the security breach at the end of February, when it discovered that a hacker had used the login credentials of two employees from one of its franchise properties to access customer information from the app's backend systems.
Marriot says the hack dated back to mid-January but did not disclose additional details about how it happened.
The hotel chain said that the intruder(s) had direct access toMarriott Bonvoyloyalty data such as:
The hotel said that at this moment in the investigation, it did not believe that the hacker did not gain access to account passwords, account PINs, payment card information, passport information, national IDs, or driver's license numbers.
Marriott launched aweb portalwhere the app's users can check if they're one of the 5.2 million users impacted by the security breach, and what data the hacker might have accessed.
This is the second security breach the hotel chain has disclosed in the past 16 months. In November 2019, Marriott said that hackers gained access to the Starwood Hotels reservation system, from where they stole the personal details of more than383 million hotel guests(revised from theinitial figure of 500 million). See our post-mortem coverage,here. US authorities saidthey suspected Chinese hackersof being behind the breach, butonly put out a statement, but no official charges.
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