Spotify once had a very similar issue which actually allowed hijacking of other accounts. https://engineering.atspotify.com/2013/06/creative-usernames/ https:/

Spotify once had a very similar issue which actually allowed hijacking of other accounts. https://engineering.atspotify.com/2013/06/creative-usernames/ https://engineering.atspotify.com/2013/06/creative-usernames...