How do you know if the other party has sent a message after hacking?

The way to know whether the other party has sent a message after hacking is as follows:

1. Try sending a message: If the message can be sent successfully, it may mean that the other party didn't send you a message. If the message is rejected or can't be sent, it may be that the other party has sent you a message.

2. Check the system notification: In the WeChat chat list, if there are unread messages, there will usually be red numbers or little red dot prompts. If you find an unread message, but you didn't send it yourself, it may be sent by the other party.

3. Observe each other's circle of friends: If you have interacted with each other, such as likes or comments, you can infer whether there are unread messages by observing the dynamics of each other's circle of friends. If the other party frequently updates the circle of friends within a certain period of time and you don't receive any message reminder, the other party may not send you a message.

4. SMS verification: try to send a message to the other party to see if it can be received normally. If the other party blackmails you, you may not receive your message.

5. Use third-party software: Some software can realize message monitoring function to help you know whether the other party has sent a message. However, there may be security risks when using such software.