Edit: it's way worse than that: the actual figures says that Mythos “only” falls for prompt injection 2.6% of the times. Maybe for an ML engineer used to work with unreliable tools that sounds impressive, but for security purpose having a system that fails every 40 attempts is outright catastrophic. Imagine if your OS vendor only patched known security holes in a way that still let an attacker go through every 40 attempts…
And we're just talking about known kind of prompt injection that are tracked by benchmarks, not any kind of 0-day vulnerability found by clever attackers.
Pretty famously, false positives make some other Anthropic products unusable. If you treat them as zero cost it’s easy to drive down miss rate.
Don't worry, you only have a 2% chance of having you bank account drained any time an attacker tries their chance.
"We'll just stop training and we'll be profitable!"
Humans are also susceptible to prompt injection all the time, we just call it differently: social engineering or scam.