Comment by spike021
16 hours ago
A while back I had a reservation with a hotel on Booking and I received a phish attempt that came directly via the Booking site domain email and also DMs but "sent" by the hotel. When I looked into it at the time, it seemed less like an issue of hotels specifically having their accounts infiltrated and more like some kind of message/email endpoint on Booking's end was being abused in a similar manner.
I'm not sure this is the same type of issue but found this interesting, especially since apparently it's been reported to MS and no action has been taken.
I have not seen one of these that wasn't a compromised hotel email or booking account. I have had to "help" a hotel get malware/RATs off their system more than a dozen times as a _guest_
I've started to assume that any non-chain hotel is compromised after losing $2k to hackers that completely owned the hotel's email system. Thankfully DMARC made it irrefutable that it was their system at fault and they assumed liability. BEC is shockingly common and difficult to detect until it's too late.