Seems like the PHP catastrophy got another victim.
It seems that Japanese companies are still feeling the impact from the recently discovered PHP vulnerabilities. While updates are actively underway, almost every day it seems like another company gets hacked.
Many have also chosen to simply restrict access to anyone outside of Japan, thinking that there's not too big of a chance of domestic cyberattack, an assumption that doesn't seem to be holding up too well.
Now the issue has reached SEGA as ALL.NET, which their arcades rely on extensively as a form of DRM and storing player profiles, is taken down.
It might sound absurd that you can't play on a physical arcade cab just because a website has been hacked, but that's become the standard for many modern arcades, in particular the rhythm game ones, that essentially function like live-service games.
Some cabs can still function offline, but typically have a limit on how many times they can be used, so essentially these machines across the country are nothing but a pile of hardware at the moment.
Maimai community has seemingly been hit the hardest in this regard, though a lot of them are taking the situation in good humor.
You might ask "well, why not just play games from other publishers in the meantime?". Which is a valid question, but SEGA fans take this stuff seriously.