Here's Rucknium's latest article about the infamous #monero 18-block reorg: What happened, why it matters, and what it has to do with the annoying 10 block lock.
If I could understand the whole thing enough to be able to do the diagrams, you can do it as well!
But seriously, give it a read. It's important if you care about (and want to understand) Monero's inner workings and quirks better:


Rucknium
Monero
On September 14, 2025, a malicious mining pool successfully performed an 18-block “blockchain reorganization” of the Monero blockchain....
I've been using gupax.io for a week now, it really is easy and every hash makes
#monero a tiny bit harder to mess with.
That's why I sound like an italian speaking spanish 🤌
My favorite place to search for services that does NOT require your identity just got a massively useful and good looking update: 
#monero
#monero
That's a great game on the Epic store that you can claim for free just for today: 
