DNS Attacks

DNS attacks target the Domain Name System, which translates human-readable domain names into IP addresses. Here are some common types of DNS attacks:

1. DNS Spoofing (Cache Poisoning): Attackers inject false DNS records into a cache, redirecting users to malicious sites instead of the intended ones.

2. DNS Amplification: This is a DDoS attack where attackers send small queries to DNS servers, which respond with larger replies to a victim’s IP address, overwhelming it.

3. Domain Hijacking: Attackers gain unauthorized access to a domain registrar account and change the domain’s settings, often redirecting traffic or stealing the domain.

4. DNS Tunneling: Malicious data is sent over DNS queries and responses, allowing attackers to bypass firewalls and exfiltrate data.

5. Phishing: Using DNS attacks to redirect users to fake websites that mimic legitimate ones to steal credentials or sensitive information.

6. Subdomain Takeover: If a subdomain points to a resource that has been deleted or is not in use, an attacker can register that resource and gain control over the subdomain.

Prevention Strategies:

• DNSSEC: Implementing DNS Security Extensions to protect against spoofing by validating DNS responses.
• Regular Audits: Conducting audits of DNS records and configurations to identify vulnerabilities.
• Access Controls: Limiting access to DNS records and registrar accounts to prevent unauthorized changes.
• Monitoring and Alerts: Setting up monitoring for unusual DNS activity or changes to records.