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Public Wi-Fi, why should you not use them?

March 5, 2024 · 5 min read · Ronas Network team

Free Wi-Fi in cafes, malls and airports is convenient and risky. How attackers use public networks to steal logins and data, and how your team can stay safe on the move.

Wi-Fi is often mistakenly thought to be the acronym for Wireless Fidelity, it is however unexceptionally wrong. The technology is known as IEEE 802.11 but as they are not quite user-friendly, a marketing firm came up with Wireless Fidelity, and it serves it purpose until today.  As Wi-Fi is continuously upgraded from 54Mbps to 5G, it became an inseparable part of our lives. Electronical devices are invented to be much smarter and compact due to better Wi-Fi connection. Look to your left and right, at least 2 people are on their phone, surfing the Internet or calling someone. Want to know something? Google it. Want to buy something? Shopee, Amazon, Etsy and many more are at the tip of your fingers. Yet, there are still restrictions on Data Connection and Wireless Network which is that one cannot go beyond its coverage area.

Why Public Wi-Fi Attracts Attackers

As Internet becomes a necessity, it has grown to be a popular attraction for shops, malls, restaurants, cafes and many more. Just by putting a sign or sticker saying that you provide free Wi-Fi will increase your market presence and ultimately, profitability. Nevertheless, before connecting to such open networks, you should know what you are dipping your legs into, feeling the cold of the water before diving in.

Man-in-the-Middle Attacks

The most common attack is the MitM or also known as the Man-in-the-Middle attack. Its eavesdropping nature is due to the fact that the attacker reads whatever data you send. It could be a message, a purchase, or a simple search. Just so you know, whatever private chat you send using a public Wi-Fi is most probably not private at all.

Session Hijacking

Besides MitM, Session Hijacking is also another threat. The process is quite similar to the previous attack but instead of just watching the data being transferred from 2 different points, the attacker slips in the middle of the conversation and takes over it. Now instead of you logging into your Instagram account, it is the attacker. Yet on Instagram’s perspective, it is indeed you who are logging in. The account is no longer under your sole access.

Snooping and Sniffing

There is also Snooping and Sniffing. It is a more sophisticated sort of attack as it normally requires extra resources such as software kits and equipment. Cybercriminals uses them to intercept Wi-Fi signals which ultimately allows them to have full access to your online activity, all of it. From knowing the pages you’ve visited up to your log-in details. This ultimately allows them to hijack your account, all while you freely use public Wi-Fi.

Malicious Hotspots and Wi-Fi Honeypots

The most deceivable public network attack is Malicious Hotspot and Wi-Fi Honeypots. They are highly similar as they both are hotspots set up by cybercriminals who are ready to pounce on the little sheep who innocently walk through their front gate. Public normally fell for them as they appear to be normal legitimate networks. They might have the same name with the place you’re in, for instance “Goallie Café”. The moment you link or connect to the Wi-Fi, the hackers are able to obtain all of your data. You might think that they are only able to see what’s on your device but that is not true. Even from your phone number and full name, data from all the different sites you logged into are in their palms.

If You Have No Choice but to Connect

Now, what if your phone battery is less than 10% and using cellular data is too battery draining and have no other option but to use public Wi-Fi? When taking risks, one must always be on their toes and take precaution. Here are some things that you can do to minimize the risks of being attacked by cybercriminals or having your data stolen from underneath your nose.

Use a Business VPN

The best approach to secure net surfing is to use a Virtual Private Network (VPN). Be sure to not use the free ones as they are free for a reason. CLICK HERE FOR MOR INFO ABOUT IT. Using VPN will help keep you anonymous as well as protect your data from getting snooped. Besides that, you should never log into account that hold sensitive information about you, be it personal information such as your identity card number or bank account credentials. You should also not leave you Wi-Fi or Bluetooth turned on when they are not in use. Leaving them open is similar to leaving your front door open.

Treat Every Network as Suspicious

What you should do when using public Wi-Fi is to always be suspicious of them. Suspect each and every one of them. This might be seen as being too paranoid, but it is better to be safe than sorry. Next, be sure that you visit only HTTPS-enabled sites. CLICK HERE FOR MORE INFO. When you are done with your account, never leave it idle. Be sure that you log out when you are no longer using them. Leaving them open is as if leaving out sugar for ants to come crawling from invincible cracks. If possible, use multi-factor authentication when logging into your account, regardless of how sensitive they are. This reduces the possibility of your account being hijacked.

The Bottom Line

In a nutshell, public Wi-Fi is as bad as it is good. There are a lot of loopholes and using them makes you much more vulnerable than using your private networks. While business owners might think that installing a Wi-Fi makes them more competitive than their competitors, it also puts their clients and customers at the edge of a cliff. As there are not much awareness being shared about it to the public, many underestimates the threat of public Wi-Fi.