- [https://polkadot.polkassembly.io/post/405](https://polkadot.polkassembly.io/post/405)

He also suggested:
- the Regex for username validation is a bit weak in that you can set a username with only specials like '-_-' or '...' [https://github.com/paritytech/polkassembly/blob/1dbdc73319e1c95323ff128e31babfae6a9b84a1/auth-server/src/utils/validateUsername.ts#L10](https://github.com/paritytech/polkassembly/blob/1dbdc73319e1c95323ff128e31babfae6a9b84a1/auth-server/src/utils/validateUsername.ts#L10)

And recommended: `^[A-Za-z0-9]{1}[A-Za-z0-9.-]{2,29}$ `

For finding some bugs on Polkassembly and suggesting fixes