If the breached data is API keys that can be used to rack up charges, it's going to cost you a bunch of money.

If it's a crypto wallet then your crypto is irreversibly gone.

If the breached data is "material" - i.e. gives someone an advantage in stock market decisions - you're going to get in a lot of trouble with the SEC.

If the breached data is PII you're going to get in trouble with all kinds of government agencies.

If it's PII for children you're in a world of pain.

Update: I found one story about a company going bankrupt after a breach, which is the closest I can get to "lethal": https://www.securityweek.com/amca-files-bankruptcy-following...

Also it turns out Mossack Fonseca shut down after the Panama papers: https://www.theguardian.com/world/2018/mar/14/mossack-fonsec...

There are people who have had to move after data breaches exposed their addresses to their stalkers. There's also people who may be gay but live in authoritarian places where this knowledge could kill them. It's pretty easy to see a path to lethality from a data breach.

> Data breaches are hardly lethal.

They certainly can be when they come to classified military information around e.g. troop locations. There are lots more examples related to national security and terrorism that would be easy to think of.

> When we’re talking about AI there are plenty of actually lethal failure modes.

Are you trying to argue that because e.g. Tesla Autopilot crashes have killed people, we shouldn't even try to care about data breaches...?

Jamal Khashoggi having his smartphone data exfiltrated was hardly lethal?

Depends on the data.