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Comment Re: Beyond stupid (Score 1) 97

Good question, and perhaps poorly phrased on my part. I'm really just relaying news I heard on the radio, so this is my own interpretation to be taken with a grain of salt. 5G can be used for private networks, sort of like a large-scale Wi-Fi, which makes communication secured with SIM/eSIM authentication. It's often used for trucks and robots. Private network functionality also exists within 4G but only for 4G LTE, but in this case an open network was used, which made it possible to carry out password-based attacks.

And yes, the stores were connected to a central server that was compromised; from there, a command was sent to 700 stores, instructing them to defrost their freezers.

Comment Re:Beyond stupid (Score 1) 97

Many refrigeration systems in stores are connected via 4G or 5G to allow suppliers to perform remote monitoring and maintenance.
The control system are exposed to the open internet, but often coupled with simple passwords.
In the previous similar attack in France it was revealed that the freezing systems were protected by a trivial password.
An upgrade from 4G to 5G was scheduled for Wednesday, a measure that would have made the system more secure.

The irony is that the monitoring system existed precisely to prevent such an incident.
It even issued a warning, but it was sent via email, and not noticed.

Comment Re:Today I learned (Score 3, Interesting) 19

Denmark's population is just over 6 million.

Many countries like Denmark, Sweden, Norway, and Finland, all have personal identification number, based on date of birth. It is fairly similar to the American Social Security Number but that does not require citizenship.

There are also countries that lack some form of personal identification number, such as Australia, New Zealand, and the United Kingdom. In Germany, it is illegal to have a single number that links all systems, which forces them to use different numbers for the same individual.

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