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My router has been hacked and all devices have had some sort of spyware installed (Don't ask me how I know this, just please take my word for it).

Since they can see everything I do on my devices, they can also see what I change my router password to every time. When I disconnect from wifi and use data they still have access to my device. I even did a factory reset, inserted a new sim and then set it up using data, but they still somehow had access. What are my options?

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Easy: disconnect the router from the internet and turn off data on your mobile. You still have a home network, but no access to the internet and the attacker is cut off.

Connect to the router from wifi and reset the router to factory settings (see your manual).

Factory reset your mobile devices.

Everything is now back to a safe state.

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    No it will not. If you have done those things, then you are not hacked. And your desire to not give evidence as to why you think you are suggests that you already knew we would say that. "Doctor, I have cancer. Don't bother checking if I do, but how can I perform surgery on myself to cure the cancer?" The answer above is the answer to what you have asked. If you want more, you need to get into the details. – schroeder Nov 27 '19 at 14:52
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    Your iPhone push notifications are not evidence of being "hacked". More details required on that one. – schroeder Nov 27 '19 at 15:05
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    Theoretically, if the attacker has full control over a device (we have not established that is the case), then the device could be used to launch attacks to other devices on the network. If those devices have vulnerabilities, they might get "infected". Note all the conditionals in that sentence. If a device is not connected to the network, there is no way for a malicious device to contact it. – schroeder Nov 27 '19 at 15:07
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    That just means someone knows how to text/message/use an app you use to send messages. It does not indicate that anyone has access to your device. – schroeder Nov 27 '19 at 15:12
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    Instagram: no attacker can accomplish that; there is another explanation. You use the term "push notifications" but that's a generic term. What app is displaying the notifications? – schroeder Nov 27 '19 at 16:05
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I have some doubts, like schroeder that your home router was hacked. The more likely explanation is something else in your network is infected.

If you want to be 99% sure, flash the router firmware to the latest/greatest, and factory reset it.

If you want to be 100% sure, buy a new router from a completely different manufacturer and completely disconnect the old one.

Solving problems is about isolation, and questioning (and confirming through experiment) your assumptions. If you don't do both of these it's highly likely you're going down the wrong path.

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  • It's 100% a hack because I know who is doing this and that person got a hold of my router password and all this has been happening ever since. – zZurf Nov 27 '19 at 16:01
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    Even with all the details you provided, I'm not convinced this is a hack at all. – schroeder Nov 27 '19 at 16:04
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  1. Reset the router to factory defaults and the install the latest official firmware available for it. Do that on a different system that is not infected.

  2. Format and reinstall all your affected systems. Do not connect them again to the network until they are all clean.

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  • what if I connected them to the network while not clean? Can they affect other devices or the network? Also I have alot of devices, how can I check which one is affected and which one isn't? – zZurf Nov 28 '19 at 10:22
  • Yes, they can. An infected system may attempt to re-spread the infection or re-gain control of the router. – Overmind Nov 28 '19 at 11:29
  • But the only way they managed to infect my devices in the first place was because they gained entry through my router. That has now been changed as I followed schroders advice above and changed all the password of the router by disconnected the internet connection. My router was not really hacked into but it was just that they found out the master password and gained access. So that's why I do not think they'll be able to get access to my network anymore. However my devices still have some kind of spyware installed. – zZurf Nov 28 '19 at 11:44
  • That's why you need to format all devices or at least try to deep-clean them. – Overmind Nov 28 '19 at 11:46
  • What does format mean? – zZurf Nov 28 '19 at 11:49

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