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This question already has an answer here:

Is it possible that my Windows 8.1 computer gets infected by virus or malware by just connecting to an Android phone acting as a WiFi hotspot? I didn't do anything else. I didn't surf the internet, nothing. I just connected to it. I know chances are, everything is okay, but I also want to know if my thinking is right or not.

I don't use an anti-virus software. I just monitor what's going in and going out.

Is it possible for an Android device to send something bad to a Windows computer just by connecting to it?

marked as duplicate by Steffen Ullrich, Matthew, Xander, Xiong Chiamiov, J.A.K. Feb 2 '17 at 0:55

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Yes, a WiFi Hotspot is a proxy which has the means to perform many acts including malicious ones. Be it an android phone acting as a WiFi hotspot or a router or any other devices.

  1. Passive

Snoops on your traffic, data credentials like passwords etc.

  1. Active

Redirect you to malicious links resulting you in downloading malware or pushing malware to your device.

There are known trojan that can perform malicious acts via a hotspot and there are countless more unknown (it's a guaranteed).

It is the unknown that we are unsafe from. So the best thing is to connect only to a WiFi hotspot that you know and are familiar with.

Last but not least, do you want to apply the two second rule here? Drop a donut on the ground, pick it up in less than two seconds; ok cool. No bacteria, I can eat it.

In this case, just connecting for that split second and then disconnecting does not mean you're safe. Data similarly can be ex filtrated in that few seconds.

Better safe than sorry, recent years of leaks show just how vulnerable we are in security and privacy.

Some research here

  1. Commercial Surveillance Tools Being Used as Mobile Malware
  2. Xsser mRAT Targets iOS and Android for Man-in-Middle Attacks
  3. Smartphone infections double, hotspots are also a trouble area

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