Businessinsurance.com reported that security
consultants at F-Secure (a Finnish data security company)
discovered about a year ago that by "getting hold of a widely
used hotel key card, an attacker could create a master key to
unlock any room in the building without leaving a trace,...".
The April 25, 2018 article entitled "Hotel key
cards, even invalid ones, help hackers break into rooms"
included these comments:
While the researchers have fixed
the flaw together with Assa Abloy, the world's largest lock
manufacturer which owns the system in question, the case serves as
a wake-up call for the lodging industry to a problem that went
undetected for years.
The researchers helped Assa fix
the software for an update made available to hotel chains in
February. Assa said some hotels have updated it but that it would
take a couple more weeks to fully resolve the issue.
