Let's talk about Byzantine fault tolerance.
Classic BFT protocols require at least 3f + 1 nodes in total, where f is the number of malicious nodes—in other words, malicious nodes must make up less than one-third of the total.
To be honest, I only came to understand this later: when assessing a chain's security, pay attention to how many validators it has and whether voting power is overly concentrated in the hands of a few nodes.
$ATOM is the native coin of Cosmos Hub, a chain that uses a Byzantine fault-tolerant consensus mechanism.
Markets are always uncertain, so think ahead about what you'll do if you're wrong.