DNS Spoofing Definition:
DNS Spoofing, also known as DNS cache poisoning, is a cyber attack in which an attacker alters DNS records to redirect users to malicious websites or services instead of their intended destination. This type of attack compromises the Domain Name System (DNS), which translates human-readable domain names into IP addresses, enabling users to access web resources.
What is DNS Spoofing?
DNS Spoofing occurs when attackers manipulate DNS data, either by injecting forged responses into DNS caches or by Exploiting vulnerabilities in DNS servers or protocols. When users request a website, the DNS server returns a modified IP address, directing them to a malicious website that may appear legitimate. This can result in Phishing attacks, Malware distribution, or data theft.
Why is DNS Spoofing important?
The purpose of DNS Spoofing is to intercept or redirect user traffic for malicious purposes, such as stealing credentials, distributing Malware, or conducting man-in-the-middle attacks. By tampering with DNS responses, attackers can deceive users and compromise the integrity and confidentiality of communications, posing a significant security risk.
How does DNS Spoofing work?
DNS Spoofing can be performed through various methods, such as injecting fake DNS responses into a server’s cache (cache poisoning), Exploiting weaknesses in DNS protocol implementations, or intercepting communications between a user and a DNS resolver. Defences against DNS Spoofing include using DNSSEC (DNS Security Extensions) to digitally sign DNS data, configuring DNS servers securely, and regularly updating server software to Patch known vulnerabilities.
DNS Spoofing Examples:
Examples of DNS Spoofing include redirecting users attempting to access a banking website to a fraudulent site that steals their login credentials or redirecting traffic to a malicious website that serves Malware. Attackers may also use DNS Spoofing to perform man-in-the-middle attacks, intercepting user communications with compromised websites.
DNS Spoofing Issues:
DNS Spoofing poses a serious security threat because it can be difficult for users to detect, especially when the malicious site closely mimics the legitimate one. Defending against DNS Spoofing requires secure DNS configurations, the use of DNSSEC, monitoring DNS traffic for anomalies, and educating users to recognise suspicious website behaviour.
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