Pepe - Audit

In the contract `PepeToken` the role `_owner` has authority over the functions shown in the diagram below.
Any compromise to the `_owner` account may allow the hacker to take advantage of this authority and modify the blacklists and rules.

![](https://accelerator-tasks-prod.acc.corp.certik.com/11ee-9f58-be6347e0-8e0a-9baa3c5eb2d1/diagrams/centralization_PepeToken-PepeToken-_owner.svg)

There should always be events emitted in the sensitive functions that are controlled by centralization roles.

Addresses are not validated before assignment or external calls, potentially allowing the use of zero addresses and leading to unexpected behavior or vulnerabilities. For example, transferring tokens to a zero address can result in a permanent loss of those tokens.

```solidity=607
        uniswapV2Pair = _uniswapV2Pair;
```
- `_uniswapV2Pair` is not zero-checked before being used.