Satoshi's Final Message Wasn't About Bitcoin Itself
On April 26, 2011, Satoshi Nakamoto sent his last known email to developer Gavin Andresen, stating that he had "moved on to other things."
However, his final public message on the forums was brief but important — a security warning:
"There’s more work to do on DoS."
Even in his last words, Satoshi was focused on strengthening the network.
