What a hacker can see through your wifi on your computer.

 Safety and privacy are just two words which means nothing if you are connected to the internet. It is impossible for any one to be 100% safe. But still you can reduce the chances of your data breach by many measures.

We are talking about a very small part of the data breach system, that is data breach over the wifi networks. There are tons of ways by which your data can be exploited but we are covering only wifi connections.

What are the requirements to intrude in someone's computer

• The hacker should be in the same wifi network in which the target computer is.
• The hacker's wifi card should support monitor mode and packet injection.
• The hacker should have a hassle free operating system which have less restrictions 
• OS like linux.
• Proper tools which helps in sniffing in the network.
•  Proper knowledge of the weakness of the system.

Now coming to the main points, what a hacker can see in the target computer.

If the hacker is within the same wifi network then there is almost everything he can see.

• Turn on the camera.
• Turn on the mic of the target.
• Can see your log files.
• Your browsing history.
• Your current browsing details.
• Your passwords.
• Can make a permanent backdoor to your system and can control your system remotely.
• delete a folder.
• create a folder or files.
• copy your files from your computer.
• See through your otp.
• your card details (though it is encrypted but can break the encryption).
• All your unencrypted data but also breaking the encryption is not that much difficult.

In short if there is any hacker over your network then no one can save your data from being exploited. Many antivirus comes with the feature of wifi protection but I dont think that can save you completely from any loss. 

So it is recommended to not connect to the public wifi if not urgent and also it is said to make your wifi password strong.