Sadly, the exact same hack happened in hundred of french grocery stores three weeks ago. I question people's ability to fix this kind of issues

And a couple weeks earlier to a couple dispensaries in US military bases.

At that point it should be firing alarms on every grocery chain everywhere. While you may not be in a US military base (they are impopular with a lot of people) the fact is that someone figured out how to do it and others will figure it our too.