Question:
HOW CAN I TELL IF SOMEONE IS HACKING MY WIFI?
peggy
2017-05-01 07:53:07 UTC
HOW CAN I TELL IF SOMEONE IS HACKING MY WIFI?
Five answers:
Tracy L
2017-05-01 18:11:47 UTC
Install a NETWORK MONITOR, you can see anything connected. If needed you can even trap packets etc.

https://www.opennms.org/en is a free open source system as is http://angryip.org/download/#windows which simply locates all IP addresses that are active on your system. It is easy to use and since ALL devices that connect will have to have an IP they can't hide. There are tons of "free network monitors" most any can show you who is connected wired or wireless all devices run into the same router thus are on the same network! You may even find that something as simple as http://www.nirsoft.net/utils/wireless_network_watcher.html a network Watcher is all that you need.
?
2017-05-01 08:10:27 UTC
Technically, you cannot tell if someone is hacking your WiFi (trying to gain access to it). If they succeed, then the router should show their connection into the router either in the list of connected devices or in its log files, and also show increasing traffic over the ISP connection.



Note: once they are connected to your WiFi, they may start hacking any of your devices that are currently connected to your internal network either by WiFi or Ethernet. This traffic will not show up as data being used on your ISP connection.



You should ensure that your WiFi is using WPA2 (PSK) encryption with a random pass phrase of your own choosing (not the default one). If you must use words that can be found in a dictionary, pick at least three unrelated words (such as "monkey RaSpBeRrY CRIMSON") Use upper and lower case letters, you can also add numbers and punctuation. The WPA2 pass phrase can be between 8 and 63 characters in length.



You should also set your own password to access the router's configuration settings. Keep a separate record of this password. If you forget it the only way to recover is to reset the router to the factory state, which may require you to set up your personal settings again.



Be careful to whom you give out the WiFi pass phrase as they might pass it on.



I hope this helps.
anonymous
2017-05-01 08:04:47 UTC
Sign into your routers status page and find the section that lists the connected machines.



Compare this to what machines you actually have.



Or.. Make sure WPA2 encryption is turned on, and change the passphrase. You will have to reconnect all your devices, but so will any unauthorised user. They wont know the new one, and cracking a WPA2 password would take a few hundred years with a supercomputer.
David
2017-05-01 08:00:45 UTC
It isn't that easy, unless they are logged on all the time they may not be detectable.

Log into your router using the username and password supplied when it was installed (they are often printed on a sticker on the rear of the unit). The specifics for each router are different, but you are looking for the Wi-Fi status page which lists all the devices that have connected, or are connected, to your network.



These details may be under a section called Attached Devices, Device List or Home Network for instance.



Alternatively change the wifi password in the router, make sure you are using WPA/WPA2 encryption not WEP as this can easily be hacked. If you change the wifi password remember that all your own personal devices laptops phones, smart devices will be disconnected and you will have to enter the new wifi password.
Crim Liar
2017-05-01 07:57:32 UTC
You should be able to log in to your WiFi router and see a log of the IP address & MAC id of devices that are connecting to your WiFi. If necessary you could ban a device by it's MAC id. If you still don't see it then you could try changing your WiFi password!


This content was originally posted on Y! Answers, a Q&A website that shut down in 2021.
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