eli5

What it is the meaning behind L2 "deriving security" of L1? 

In other words:

How does submitting proofs/snarks to L1 makes L2s secure?

Building Solid Goods

linktr.ee/megarocklabs

Imagine a L1 as a constantly growing, huge blob of glass. Every few mins you add a new blob of liquid glass on top, it hardens, and makes it so that no one can mess with the deeper layers without causing a bunch of very visible damage.

> L2 "deriving security" of L1

common misconception and marketing material. L2 doesn't "derive security" of L1, the foreign asset bridged from the L1 is provided with safe guards that allow it to exit via the bridge on the L1.

1/n