If the attacker hacks into your WiFi and is able to connect to the network with his laptop then it opens up a big pool of possibilities for him because now he is present in the same LAN as you are. Some possible scenarios would be :

1. He can easily capture traffic moving in and out of your system.
2. If you are managing your access point over http (not recommended) then he might be able to sniff the password and make changes to the Access Point configuration.
3. MITM is a possible attack.
4. If you dont have all the recent updates and patches, then he might be able to find and exploit a vulnerability.This will allow him to take control over your system or he might be able to put a keylogger into the system.
5. He may anonymously perform some illegal hacking activity from your network and then the authorities will track back to you.

Here is a link that you might find helpful. It talks about securing the WiFi Access Point.

If the attacker hacks into your WiFi and is able to connect to the network with his laptop then it opens up a big pool of possibilities for him because now he is present in the same LAN as you are. Some possible scenarios would be :

1. He can easily capture traffic moving in and out of your system.
2. If you are managing your access point over http (not recommended) then he might be able to sniff the password and make changes to the Access Point configuration.
3. MITM is a possible attack.
4. If you dont have all the recent updates and patches, then he might be able to find and exploit a vulnerability.This will allow him to take control over your system or he might be able to put a keylogger into the system.
5. He may anonymously perform some illegal hacking activity from your network and then the authorities will track back to you.

Here is a link that you might find helpful. It talks about securing the WiFi Access Point.

If the attacker hacks into your WiFi and is able to connect to the network with his laptop then it opens up a big pool of possibilities for him because now he is present in the same LAN as you are. Some possible scenarios would be :

1. He can easily capture traffic moving in and out of your system.
2. If you are managing your access point over http (not recommended) then he might be able to sniff the password and make changes to the Access Point configuration.
3. MITM is a possible attack.
4. If your OS is not updated then he might be able to find and exploit a vulnerability.This will allow him to take control over your system or he might be able to put a keylogger into the system.
5. He may anonymously perform some illegal hacking activity from your network and then the authorities will track back to you.

Here is a link that you might find helpful. It talks about securing the WiFi Access Point.

If the attacker hacks into your WiFi and is able to connect to the network with his laptop then it opens up a big pool of possibilities for him because now he is present in the same LAN as you are. Some possible scenarios would be :

1. He can easily capture traffic moving in and out of your system.
2. If you are managing your access point over http (not recommended) then he might be able to sniff the password and make changes to the Access Point configuration.
3. MITM is a possible attack.
4. If you dont have all the recent updates and patches, then he might be able to find and exploit a vulnerability.This will allow him to take control over your system or he might be able to put a keylogger into the system.
5. He may anonymously perform some illegal hacking activity from your network and then the authorities will track back to you.

Here is a link that you might find helpful. It talks about securing the WiFi Access Point.