Stay secure. Stay updated. And never trust a packet.

The most common and dangerous bypass occurs in BungeeCord networks. If a "child" server (like a lobby or survival server) has online-mode=false but is not correctly firewalled, an attacker can connect directly to that server's port, bypassing the main proxy where the authentication plugin usually sits.

This is a race condition. On a server with high latency or heavy TPS (ticks per second) drops:

For the most up-to-date and "safe" information, I recommend checking these sources:

The oldest bypasses were pure plugin vulnerabilities.

Engage with the Minecraft server community and AuthMe developers to understand best practices and any ongoing work in the authentication space.