AI could have caught them off guard?

Lots of people are saying that this would be very easy to miss in review, so it seems plausible that someone who became aware of it would also come to that conclusion.

Given how many people quickly identified it once the symptom drew eyeballs leads me towards the latter, if someone did know about it for a long time they were playing chicken with other potential attackers.

justin_shocknet

That seems more plausible to me but I don’t have a strong feeling about how plausible it is.

Another possibility is that it was initially a genuine mistake that someone later saw the opportunity to exploit.

security

bitcoin

Cold Card Retirement Attack?

UncleJim21

That seems more plausible to me but I don’t have a strong feeling about how plausible it is. 

Another possibility is that it was initially a genuine mistake that someone later saw the opportunity to exploit.