New DNS Security Tool Automates Subdomain Monitoring
The platform mitigates hijacking risks by identifying unused zone records, addressing a common vulnerability for enterprise domains.
Updated on Oct. 29, 2026 in Cybersecurity
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Cyber Defense Magazine has named CSC the 2026 Top InfoSec Innovator for its new Subdomain Monitoring solution. This security tool is designed to mitigate subdomain hijacking risks by identifying and purging unused zone records.
Why it matters
The solution addresses corporate security gaps caused by dangling DNS, where forgotten subdomains become entry points for malicious actors. It automates the detection of unauthorized changes to help security teams maintain better control over their DNS infrastructure.
CSC analyzed nearly 500,000 DNS records to develop its Subdomain Monitoring technology. The system tracks zone records and provides alerts through the DomainSec SM threat intelligence platform when changes occur.
The players
CSC
A Wilmington-based firm providing corporate domain management and cybersecurity services.
Cyber Defense Magazine
An industry publication that evaluates cybersecurity innovations and provides annual recognition to InfoSec providers.
The details
The platform functions by continuously monitoring for changes to zone records, which are DNS entries that map domain names to IP addresses. When a record is identified as unused, the software facilitates its removal to eliminate dangling DNS, a vulnerability where a domain points to an unclaimed external resource that attackers can hijack. The system alerts security engineers to these changes and provides contextual intelligence to help identify potential threat vectors.
Timeline
2026: CSC received the Top InfoSec Innovator Award.
The Tech Race
The tool enters a crowded market of DNS security and automated hygiene platforms focused on reducing the attack surface of large enterprise domains. It marks a push toward data-driven, continuous monitoring in a field traditionally reliant on static record auditing.
Security administrators can now integrate this automated monitoring to reduce the manual effort of identifying dangling DNS records across large portfolios. The solution is currently available for those managing DNS architecture through the DomainSec SM platform.
The takeaway
Dangling DNS remains a primary vector for domain takeovers that can compromise brand reputation and network security. Security teams should prioritize regular audits of their zone records to identify and purge obsolete entries.
Further reading
For more on the current landscape of digital infrastructure protection, visit Cybersecurity.
More information
Learn more about the technical specifications and capabilities of the CSC Subdomain Monitoring solution information.
Source note: This article includes information reported by AFP.
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