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A man has shown the scary amount of information a hacker could gain access to if you connect to them over public WiFi.
In the clip, Matt explained: "Want to know what a hacker sees when you connect to him over free WiFi?
"I got my fake WiFi access point all set up, I decided to call it Starbucks Free WiFi. Let it connect to my iPad.
"And just like that the log-in page comes up. I enter my email and password, hit connect - that's the internal IP for my iPad. Go down to 'view log' - expanded it a few times, but that's my email and password.
"You can also set up pages to prompt downloads or even enter phone numbers.
"Let's say you clicked that download button - they could set it up so that it's a virus and when you open it up they have access to whole your computer.
"And if you visit any websites that are HTTPs they'll come up right there - for example, University of Florida as you can see its non-secure, which means its HTTP, and every image and everything you're doing comes up right here."
Matt recommends being extra careful when using public WiFi and suggests using a VPN to keep yourself safe.
Matt's followers were pretty freaked out when they saw how much information someone could pick up, with one replying: "Never ever using public WiFi again."
Someone else wrote: "I am amazed by this. Thank you for sharing the tips."
Another said simply: "This is so scary."
This isn't the first time Matt has posted a helpful video showing the dangers of hackers.
Just last month, he posted a clip in which he showed what could happen if someone hacked into your computer.
Pointing out that it is for 'educational purposes only', Matt says: "This specific programme is called 'Orcus', it's a RAT, which stands for 'Remote Administration Tool', and it's used to access your computer, see all your files, your webcam, your keyboard strokes, everything."
In a later video, Matt points out that you can't actually get Orcus anymore, and that you shouldn't try to anyway.
Stay safe out there, guys.
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