DNS hijacking (also DNS poisoning or DNS redirection) is a type of cyber attack where the hacker tries to manipulate DNS queries in order to redirect users to malicious websites.
What is DNS hijacking?
DNS stands for Domain Name System. It's basically a phone book of the internet, translating your friendly web addresses like bbc.com to an IP address that computers can understand. Hackers have been able to change this translation service so they're secretly sending you to fake sites instead of the real ones – and you might not even know it's happening.
This is called DNS hijacking and it can be really dangerous, especially if you're logging in to your bank or email account on a dodgy site. The hackers can see everything you type in, so they could easily steal your passwords and other sensitive information.
There have been lots of reports lately of DNS hijacking happening on major sites like Google and Facebook, so it's important to be aware of the danger and take some precautions.
One way to protect yourself is to use a Virtual Private Network (VPN). This creates an encrypted tunnel between your device and the website you're visiting, so even if the hackers manage to change your DNS settings, they won't be able to see what you're doing.
You can also check your DNS settings regularly to make sure everything looks normal, and if you ever see anything suspicious, report it to your internet service provider immediately.
What does a DNS Hijacking attack work?
A DNS attack is an attempt to hijack the information that’s sent between your computer and a website. If someone successfully does this, you may end up on another site without realizing it—or worse yet, be directed to a scam page designed to look like what you were looking for. The local DNS hijack will reduce DNS redirection or DNS queries for effectiveness.
– A DNS attack redirects your web traffic to a fake page.
– This can result in personal information being stolen, such as passwords and credit card numbers.
– It can also be used to spread malware or ransomware.
– DNS attacks are often used in phishing schemes, where scammers try to get you to click on a link that will take you to a fake site designed to look like a real one.
– ISPs, data centers and other large companies are often the targets of DNS attacks because they hold so much information about us. They also have extremely sophisticated security measures that make them hard targets for cybercriminals.
– The risk is even greater if you visit websites that require you to log in, such as your bank or email account.
– It's important to ensure that the address of every site you go to is legitimate, and not something like “[email protected]” (which would be a fake version of Paypal).
Types of DNS hacking attacks
We’ve talked about DNS hijacking and how it can affect you. Now we want to go into a little more detail, talking specifically about various types of attacks that can be done on the domain name system. We will cover some basics first, then get into each type in greater depth for those who are interested.
There are three main types of DNS hacking attacks: cache poisoning, denial of service (DoS), and man-in-the-middle (MitM). Let’s take a closer look at each.
Cache poisoning is an attack that takes advantage of how DNS caching works. When you request a website, your computer will store that information for a short amount of time, then check to see if it can find that site’s IP address in its cache. If the website is not found there, your computer will go out and look up the domain on an external DNS server. Cache poisoning works by corrupting this process so that you are actually redirected to another web page than the one you intended.
A DoS attack is done by overloading a DNS server with requests, causing it to crash. There are several ways this can be accomplished, including sending repeated queries for nonexistent domain names or making large zone transfers that completely eat up all of the available bandwidth on an overloaded service. DoS attacks are often used as a way to extort money from businesses or organizations
A MitM attack occurs when an attacker is able to intercept and modify the traffic between two DNS servers. This can be done by setting up a fake DNS server that tricks both systems into thinking it’s the legitimate one, or by exploiting a security flaw in one of the servers. This type of attack can be used to redirect traffic to malicious websites, steal sensitive information, or even take down an entire website.
Rogue DNS Server Hijacking Attackers hack the DNS servers and change the configurations of targeted websites so that their IP addresses will be pointing to malicious websites. . Router DNS Hijack considers hacking into DNS routers, changing the settings and affecting all users connected to that router.
These are just a few of the many different types of DNS hacking attacks that are possible. By understanding how they work, you can better protect yourself against them. The local DNS settings will promote DNS traffic to the domain service providers.
How to prevent DNS Hijacking?
DNS hijacking is a serious security issue that can allow an attacker to take control of your website, emails, or other online services. Here are some tips for how to prevent DNS hijacking:
– Use a trusted DNS provider.
– Enable two-factor authentication on your account.
– Use a strong password and never share it.
– Keep your router updated to the latest firmware version and turn off remote administration.
– Use a firewall to help protect your computer and network.
– Install antivirus software and keep it up-to-date.
– Make sure you have a backup of your website and data in case of an attack.
These are some easy ways to help prevent DNS hijacking. Stay safe online!
Why do attackers hack DNS?
DNS stands for “Domain Name System” and is the service that converts domain names such as us.hostinger.com to an IP address (in this example, 18.104.22.168). DNS records are stored in a distributed database called the Domain Name Server [definition].
Attackers hack into DNS servers to intercept and redirect web traffic. Hackers can also break into a website through the DNS server, which means they don’t have to go after any servers at all.
As an example of how dangerous this can be for users, in 2014 there was an attack on one critical DNS provider that hijacked search results so anyone searching for Microsoft-related terms got redirected to a malicious website.
DNS servers are also being attacked with ransomware, which is malware that locks users out of their devices or encrypts their files until they pay a ransom. The DNS resolver does this by communicating with top-level domain and root servers, and then sending a response back to your computer.
More about Hijacking
In many cases, the ransomware attack will lock people out of their computers and demand payment in order to restore access. By attacking DNS servers, cybercriminals can hold entire networks hostage and demand a ransom in order to allow people access again.
DNS requests are an important part of everyone’s internet experience, so it’s critical that we do everything we can to protect them against attacks.
This includes using the latest security updates available, staying off public wifi whenever possible (and using a VPN if we do) and regularly backing up our data in case something does happen to the DNS server.
Isn't it great for internet service providers? DNS hijacking attacks are restricted through valuable DNS settings or DNS resolvers.