The tweet mentioned that it was a "chain reorganization". These happen all the time, even in Bitcoin, by design. The simplest way to defend against these is jus

The tweet mentioned that it was a "chain reorganization". These happen all the time, even in Bitcoin, by design. The simplest way to defend against these is just to wait for more confirmations to arrive, thus making an attack more expensive. Many exchanges require a lot more confirmation for some of these smaller market cap coins.