Probably banking/finance. I worked for a large regional bank in the US for my first developer job and one of the security guys told me that many banks run on extremely outdated technology and that if they would ever announce that they were switching over to something new that their stock prices would plummet so they just keep using the same stuff. Imagine people not being able to buy gas because their credit card transaction can’t go through.
In that case I would make bets which online services would stop working first.
Probably banking/finance. I worked for a large regional bank in the US for my first developer job and one of the security guys told me that many banks run on extremely outdated technology and that if they would ever announce that they were switching over to something new that their stock prices would plummet so they just keep using the same stuff. Imagine people not being able to buy gas because their credit card transaction can’t go through.