The messenger is very popular with many people.
The security company Check Point A new security vulnerability was discovered in WhatsApp This allows you to change a message that has already been sent - whether in a private or group conversation is irrelevant. This manipulation is carried out via the WhatsApp web client and allows you, among other things, to change the quote function. This can have serious or even embarrassing consequences if you are accused of something wrong.
It's not a bug, it's a feature!
Loud WhatsApp The company is aware of the bug, but it is not a vulnerability in the true sense of the word. The problem is more like an attempt to change the content of an email that has already been sent. Security problems with the end-to-end encryption there are none.
If you want to be on the safe side, you should avoid using the web client altogether and continue using WhatsApp from your smartphone.