In today's digital age, we are facing more and more cybersecurity issues, among which DNS hijacking is a common and dangerous threat.
So what is DNS hijacking?What impact will it have on our cybersecurity?How to effectively prevent and resolve DNS hijacking?Let's take a look at the answers to these questions.
DNS is an abbreviation for Domain Name System, which is a type of domain name such as wwwbaidu.com) to an IP address (e.g. 153.)3.238.110). When we type a ** into the browser, the DNS server will tell us the corresponding IP address of this **, and then we can access it**.
However, some criminals will exploit vulnerabilities in DNS servers or DNS queries to tamper with DNS data and give us access to erroneous or malicious data. This is DNS hijacking. DNS hijacking can bring great harm to our network security, such as:
Induce us to enter sensitive data such as personal information, account passwords, etc., resulting in information leakage or theft.
Forcing us** or installing malware, viruses, Trojan horses, etc., to damage our devices or data.
Interfere with our normal network access, slow down our network speed and experience.
So, how can you effectively prevent and solve DNS hijacking problems?Here are some key measures:
We can use a DNS detection tool, such as , to check if the DNS server has been tampered with. Watch for unusual redirects, ads, or warnings on web pages that could be signs of DNS hijacking.
When we find that there is a DNS hijacking, we can manually change the DNS server address of the computer, mobile phone or router, and choose a trusted DNS provider, such as Google Public DNS (88.8.8 and 88.4.4) or Cloudflare DNS (1.)1.1.1）。This protects you from malicious hijacking.
The encrypted DNS protocol protects the communication of DNS queries and responses, preventing hackers from stealing or tampering with DNS data. Common encryption DNS protocols are DoH (DNS over HTTPS) and DOT (DNS over TLS). With a browser or app that supports DOH or DOT, you can get a more secure DNS service.
Firewalls can monitor and filter network traffic to block malicious hijacking attempts. Security software can detect and block malware or attacks, providing comprehensive cyber protection. It is recommended to update your firewall and security software regularly for the latest features and fixes.
Sometimes, malicious hijacking may modify the local DNS cache. Clearing the local DNS cache can help restore normal DNS service. In the Windows operating system, you can open the Command Prompt (CMD) and enter"ipconfig /flushdns"command to clear the DNS cache.
Keep your operating systems, browsers, and applications up to date with the latest security patches and fixes. At the same time, regularly inspect and maintain network equipment and software to ensure their proper operation and security.
In conclusion, DNS hijacking is a serious cybersecurity problem that we cannot ignore. By taking the above measures, we can effectively prevent and solve the DNS hijacking problem, protect our network security and user experience, I hope it can help you!