Some of these tips are outdated because the public Wi-Fi is safer than in the past. However, there are still risks.
It is the public Wi-Fi safe or not?
This is a complex issue. It is true that the tour in public Wi-Fi is much more secure and private than ever before thanks to the extensive use of HTTPS on the web. Other people spying on a public network Wi-Fi they can't just watch everything you do. The Man-in-the-Middle attacks are not as serious as they used to be.
Does that sound logical? It would be great if the public Wi-Fi it was completely safe! We would definitely use it a lot more and we do not worry so much.
But if you ask us if it Wi-Fi is completely safe, we can not give an affirmative answer. Contrast Security's David Lindner disagrees with the EFF's argument, pointing out the dangers of public access points. The Hacker News community also had many objections to the "harmless" public Wi-Fi.
Below we will try to explain these risks.
In short: Random people will no longer monitor your activities in a public place Wi-Fi. But it is possible for a malicious hacker to set up a hotspot to do many bad things. Its use VPN in a public network Wi-Fi or avoiding the public Wi-Fi is still the safest solution.
Because the public Wi-Fi is safer than ever
Extensive HTTPS encryption on the web has fixed the main security problem with public Wi-Fi. Before the use of HTTPS, most websites used the unencrypted HTTP protocol. By accessing a standard website via HTTP in a public Wi-Fi, other people on the network could track your traffic by looking at the exact web pages you visit and any messages or other data you send.
But the worst part is that with the public hotspot and without encryption you could fall victim to a "man in the middle" attack, with modified websites that you want to open. The hotspot could change any web page or other content you want to access via HTTP. If you downloaded software over HTTP, do not be sure it is on your computer.
HTTPS is now widespread, and browsers mark HTTP sites as unsafe. If you connect to a public network Wi-Fi and access sites through HTTPS, other people on the same public network Wi-Fi can see the name of the site you are linking to (for example, iguru, gr), but nothing more than that. They can not see the specific web page you are reading and they certainly can not change anything on the site when it is transferred to your computer.
The amount of data that malicious users can monitor has been reduced and is much more difficult even for a malicious network Wi-Fi to interfere with your circulation.
Some tricks still work
Although the public Wi-Fi is now much more private, it is still not completely private. For example, if you browse the web, you may end up with an HTTP site. A malicious user could infringe on this site and of course you clicked…
Even with the use of HTTPS, monitoring is still possible. The encrypted DNS are not yet widely available, so other devices on the network can see your device's DNS requests. When you connect to a site, your device contacts the configured DNS server over the network and finds the IP address associated with the domain you entered. In other words, if you are connected to a public network Wi-Fi and surf the web, someone else could see the sites you visit.
However, snooper could not see the specific web pages you are visiting from this site (HTTPS). For example, they would know that you logged in to iguru.gr but not the article you were reading.
There are still security risks in the public sector Wi-Fi
There are other potential security risks with the public Wi-Fi.
A malicious access point Wi-Fi could redirect you to malicious websites. If you connect to a malicious access point Wi-Fi and try to link to a bank page, it could take you to the address of a phishing site that looks like a bank page. In other words, he could carry out an attack. "man in the middle“. So if you try to log in you would send your login details directly to the scammer.
How to protect yourself
Maybe the public Wi-Fi be safer than before, but beware. Do not connect to your bank from a public network, as in the example above, even if everything is in HTTPS.
You could also not bother with public networks at all Wi-Fi. For example, if you have a wireless data hotspot (tethering) feature and a fixed mobile connection, you could connect your laptop to your phone hotspot to avoid potential problems with a public service provider. Wi-Fi.