Types of DNS Attacks You Should Know βοΈππ
The Domain Name System (DNS) is a core part of how the internet works β and itβs also a prime target for attackers. Understanding DNS attack types is essential for defending network infrastructure.
π οΈ Common DNS Attack Types:
1. DNS Spoofing / Cache Poisoning
β Injects false DNS data into a resolver's cache to redirect users to malicious sites.
2. DNS Tunneling
β Encodes data into DNS queries/responses to exfiltrate data or establish covert C2 channels.
3. DNS Amplification (DDoS)
β Exploits open DNS resolvers to flood a target with amplified traffic.
4. NXDOMAIN Attack
β Overloads DNS servers with queries for nonexistent domains, degrading performance.
5. Domain Hijacking
β Unauthorized changes to DNS records or domain ownership to take control of web traffic.
6. Typosquatting / Homograph Attacks
β Uses lookalike domains to trick users into visiting malicious sites.
7. Subdomain Takeover
β Targets misconfigured DNS entries pointing to expired resources (e.g., GitHub Pages, AWS buckets).
Why it matters:
DNS is often overlooked in security strategies, but itβs a critical attack surface. Proper monitoring, DNSSEC, and logging can reduce risk.
Disclaimer: This content is for educational and awareness purposes only.
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