On more than one occasion we have already mentioned some of the dangers of WiFi networks, especially when we connect from public places. The point is that we have seldom delved into the subject, which has led us to write this small informative article. In it you will discover how to detect fake WiFi networks and what are the main fraudulent techniques .
As always, common sense will be our most valuable weapon , but having the notions that we show in this tutorial will be of great help. We must pay special attention to airports, as a study has shown that it is the preferred place for hackers to deploy their fake WiFi networks.
What is a fake WiFi or twin WiFi?
One of the techniques most used by hackers are the so-called twin WiFi networks, also known by their English name Evil Twin WiFi. These are WiFi networks that at first glance seem totally legal and reliable, but behind them there is a malicious user.
Generally, the deployment of a twin WiFi has the objective of capturing all the traffic that passes through it and obtaining credentials or confidential information . The places where we can find this type of network frequently are airports, shopping centers, cafeterias, squares, bus or train stations, public places, etc.
We see that all the places have something in common, they are places frequented by many people. The hacker will allow access to the twin WiFi network indiscriminately, since the more users connect, the more likely they are to steal some valuable data. The fact of connecting to this type of network is not a problem, but the problem comes when we use them and enter our credentials in a service .
How to detect fake WiFi networks?
The first indication of a fake WiFi network is when we detect that there are two networks with the same or very similar names. Some duplicate the name of a WiFi network or make a slight modification, so that the user thinks that they are connected to a legitimate and secure network.
When they are in shopping centers, you can use the name of the shopping center, a store or a cafeteria as the name of the WiFi network. We must always look for an information point to ensure that we are using the correct WiFi network.
It is also very common to add the word “free” to the name of the WiFi network. Who does not like the word free, this in itself is a bait for the most inexperienced, but an inescapable indication that this WiFi network is false.
Another important aspect is to look at the redirects , for example, imagine that we try to access the Google page and for no reason it redirects us to another page. The landing page to which you redirect us can be of an advertising type or it can even request our credentials.
What steps to take to protect my safety when using a public network?
The primary rule is that you never use banking applications or applications in which you have to enter your credentials (username and password) while connected to a public network. When we say never, it is NEVER.
Whenever possible, navigate over the HTTPS protocol. If we see that we can only browse websites with HTTP traffic, we will stop our activity immediately. Disallowing HTTPS traffic is another method used by fake WiFi networks.