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What if someone's using my wifi?

I just figured out someone's been using my wireless network though I've set a password for a router. I just blacklisted the unknown Mac address. 

Is it possible that this thief can access my folders ? If so, how could it be ?

What am I to do in order to prevent my files and folders shared by wifi stealer ?

Update:

This b**tard can obtain my personal information that has been put down on internet so far ?

Update 2:

I get to see the message "Other people might be able to see your info over this network" on an unlocked wifi. What does it mean ? Personal info has been exposed ?

8 Answers

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  • 1 month ago
    Favorite Answer

    Are you SURE someone has been using your wireless network?  I've been fooled in the past, seeing an unknown MAC address...to later realize it was a friend's cell phone (authorized) or a smart TV (authorized) or a networked printer (authorized)

    Oh, and assuming somebody did break into your wifi, blacklisting the MAC will not help.  It takes about 10 seconds to "spoof" a mac address.  If you want to lock out users, you need to use a WHITE list.  Even that can be attacked, but it's much harder.  You put friendly mac addresses on the WHITE list, and those are the only ones that can connect to your wifi..

  • 4 weeks ago

    its possible but seldomly  if you have vpn its also possible 

  • 4 weeks ago

    Your net speed goes down, Otherwise nothing happen.

  • 4 weeks ago

    Having a network to administer used to be a job for IT specialists in big companies. However, the world has grown more technologically advanced, so now businesses small and large, most households, and libraries have their own network to manage and maintain. These days, setting up a WiFi connection is easy and inexpensive.

  • 1 month ago

    Don't let otehr do this thing at all. Because with this small thing you can lost your all personal data.

  • 1 month ago

    Your computer also is needed to set a password .

  • ?
    Lv 7
    1 month ago

    You may have reset the Router Password but did you reset the WIFI Password?

    And from that last update to your question it seems you have an Unlocked WIFI.

    You need to go into the Routers settings  WIFI section and set up security and give it a good password.

  • Mark
    Lv 6
    1 month ago

    Gaining access to your wifi just means that they were using your internet.  You PC has its own firewall.  The chances of somebody getting into you harddrive is not impossible, but highly unlikely.  They just wanted to use your internet so that they would not have to pay for it themselves. 

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