Domain hijacking is the unauthorized takeover or manipulation of a domain name, DNS configuration, or domain management account. Attackers gain control of a domain and use it to redirect traffic, intercept communications, impersonate legitimate services, or disrupt business operations.

Because domains serve as the foundation for websites, email, applications, and digital services, a successful domain hijacking attack can have widespread business and security consequences.

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How domain hijacking works

Domain hijacking typically occurs when attackers gain unauthorized access to domain management systems or exploit weaknesses in DNS configurations.

Common attack methods include:

• Credential compromise – Stolen or weak credentials used to access domain management accounts
• Social engineering – Deceiving administrators, registrars, or service providers into granting access
• Email account compromise – Taking control of email accounts used for domain administration
• Dangling DNS delegations – Exploiting abandoned or misconfigured DNS infrastructure
• Dangling CNAME records – Taking over unclaimed third-party services referenced by DNS records
• Routing and infrastructure attacks – Manipulating network paths or DNS services to gain control

Once attackers gain access, they can modify DNS records, redirect users to malicious destinations, intercept email communications, or take control of digital services associated with the domain.

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Why domain hijacking matters

A successful domain hijacking attack can lead to:

• Website and application outages
• Traffic redirection to malicious websites
• Credential theft and phishing attacks
• Email interception and compromise
• Data breaches and information theft
• Financial losses and business disruption
• Reputational damage and loss of customer trust
• Legal and regulatory consequences

In some cases, attackers may transfer ownership of the domain to another registrar, making recovery significantly more difficult and prolonging business disruption.

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Reducing domain hijacking risk

Organizations can strengthen defenses against domain hijacking by:

• Enabling multi-factor authentication for domain administration
• Using strong identity and access management controls
• Restricting administrative privileges
• Regularly reviewing DNS configurations
• Monitoring for unauthorized DNS changes
• Identifying and remediating dangling DNS records and delegations
• Maintaining registrar and transfer locks
• Conducting periodic DNS security assessments

Protecting domain management infrastructure is critical to maintaining trusted digital services and business continuity.

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How DigiCert can help

DigiCert UltraDNS provides enterprise-grade authoritative DNS services designed to help organizations strengthen domain security and reduce the risk of unauthorized DNS changes. UltraDNS supports secure DNS management through role-based administration, audit capabilities, DNSSEC support, and enterprise-grade operational controls designed to protect critical DNS infrastructure.