Hacked my code 🙁

Question

A fellow named "HRX" Has done some modifications in my recent code - chat application. I don't know how that felow hacked 😒. Help me to resolve the problem 🥺
https://sololearn.com/compiler-playground/WeDbqc7f626d/?ref=app

Answer 1

Vidhya Tharan if that person has modified your code without asking your permission or hasn't given you credit. You can message any mentor or write an email regarding this by attaching your code and his code at [e-mail].

Answer 2

No one modified your code.

You allow anyone to chat without any sort of registration. I can run your page many times and use a different name and put whatever messages I want. That is not someone hacking. You simply don't have any security in place.

Normally chat tools like this require some authentication and also have filters for content to prevent posting offensive content or links and other measures to protect the chat. With none of that in place, your chat will get filled with garbage.