Privacy controls
CyberFurl can load analytics only after you opt in. Core product features work without analytics consent.
CyberFurl continuously monitors your entire domain portfolio for DNS hijacking, dangling CNAMEs, subdomain takeovers, and lookalike domains. Stop brand impersonation before it starts.
Your domains are the front door to your digital business. If you aren't monitoring them, someone else is.
Domains are the most critical, yet frequently overlooked, assets in an organization's attack surface. A single dangling CNAME, an unmonitored lookalike registration, or an unauthorized DNS change can bypass every firewall and endpoint security control you have deployed.
CyberFurl's Domain Security Monitoring continuously discovers and analyzes your entire domain portfolio, instantly detecting subdomain takeovers, DNS drift, and brand impersonation attempts before attackers can exploit them.
[!IMPORTANT] The average enterprise has over 15% of its subdomains pointing to inactive third-party services, creating immediate vulnerabilities for subdomain takeover.
Domain Security Monitoring is the proactive, continuous discipline of tracking, analyzing, and protecting an organization's registered domains and subdomains against hijacking, misconfiguration, and impersonation.
As a core component of External Attack Surface Management, Domain Security Monitoring moves beyond internal network boundaries to protect the fundamental internet routing and identity infrastructure that your business relies on. It encompasses:
The domain ecosystem is decentralized and heavily reliant on manual processes, leading to significant visibility gaps:
The Agile Infrastructure Gap: Marketing teams spin up quick landing pages on third-party SaaS platforms (HubSpot, Unbounce, Shopify) using custom subdomains. When the campaign ends, the SaaS account is closed, but the DNS CNAME record is left intact. This dangling record is invisible to traditional security scanners but trivially exploitable by attackers.
The Siloed Operations Problem: IT manages the corporate network, Legal manages trademark registrations, and Marketing registers campaign domains on corporate credit cards. There is no centralized inventory of the organization's true domain footprint.
The Speed of Attackers: It takes less than 5 minutes for an attacker to register a lookalike domain and generate a free Let's Encrypt certificate. If your organization relies on manual quarterly audits or manual WHOIS lookups, you will only discover the threat after the phishing campaign has already succeeded.
The Complexity of DNS: DNS is often a "set and forget" infrastructure. Gradual configuration drift, such as failing to update nameservers after a migration, creates latent vulnerabilities (NS drift) that go unnoticed until they are actively exploited in a hijacking campaign.
Attackers weaponize domain vulnerabilities because they offer a high-trust, low-effort path to compromise:
A company stops using a third-party helpdesk software hosted at support-legacy.yourcompany.com, closing their account with the vendor. They forget to remove the CNAME record pointing to the vendor's domain. An attacker creates a new trial account with that vendor, claims the abandoned hostname, and successfully publishes a phishing page on support-legacy.yourcompany.com. Because it's on the official domain, email filters and user suspicion are easily bypassed.
An attacker registers yourc0mpany.com (using a zero instead of an 'o'). They configure basic email infrastructure, pass SPF and DKIM for their fake domain, and send urgent invoices to your accounts payable department. Because the organization does not actively monitor for typosquatting registrations, the attack succeeds before any warning flags are raised.
A development team quietly registers a new subdomain and provisions an SSL certificate via Let's Encrypt for a skunkworks project, exposing an unauthenticated staging API. Attackers monitoring Certificate Transparency (CT) logs instantly detect the new certificate, scan the endpoint, and exfiltrate sensitive test data.
Failing to monitor domain security introduces critical vectors for exploitation:
Subdomain Takeovers: Attackers gain control over a trusted asset, allowing them to host malicious content, steal session cookies via cross-site scripting (XSS) context, and bypass CORS policies. DNS Hijacking: Through compromised registrar credentials or NS drift, attackers can redirect legitimate traffic to malicious servers, conducting massive Man-in-the-Middle (MitM) attacks or credential harvesting. Phishing and BEC: Unmonitored lookalike domains enable highly convincing Business Email Compromise (BEC) and phishing campaigns targeting both your employees and your customers. Shadow Infrastructure: Unmonitored subdomains often host outdated, vulnerable software that acts as an easy pivot point into the broader corporate network.
The financial and reputational impacts of domain-level attacks are catastrophic:
CyberFurl correlates domain security findings across our 10 intelligence pillars to provide a holistic risk profile:
CyberFurl evaluates your domain portfolio against continuous security controls, including:
v=spf1 -all) and DMARC (p=reject) policies to prevent abuse.Our Domain Security Monitoring operates autonomously and continuously:
1. Discovery: We use CT logs, passive DNS, WHOIS records, and recursive enumeration to map your complete domain and subdomain footprint. 2. Analysis: Every discovered record is analyzed for misconfigurations, dangling pointers, and missing protective controls. 3. Risk Scoring: Vulnerabilities like subdomain takeovers are flagged with Critical severity due to high exploitability. 4. Monitoring: We ingest newly registered domain feeds daily to spot lookalikes, and monitor CT logs in real-time. 5. Alerting: When a dangling CNAME appears or a lookalike domain is registered, alerts are instantly routed to Slack, PagerDuty, or email. 6. Remediation: CyberFurl provides the exact DNS commands or registrar actions needed to eliminate the risk.
Automated Subdomain Takeover Prevention: We don't just find dangling CNAMEs; we verify them against our intelligence database to confirm exploitability, eliminating false positives.
Global Lookalike Domain Surveillance: Continuous monitoring of all gTLDs and ccTLDs using advanced phonetic and visual similarity algorithms to catch impersonators early.
Certificate Transparency Integration: Real-time visibility into the cryptographic identity of your attack surface, instantly surfacing shadow IT deployments.
Parked Domain Governance: Automated auditing to ensure domains you own but don't actively use cannot be weaponized for email spoofing.
| Threat | Detection Method | Time to Alert |
| ---------------------------------------------------- | --------------------------------------------- | -------------- |
| CNAME pointing to deleted S3 bucket | DNS resolution + Takeover Signature DB | Daily |
| Typo domain registered (e.g., app-yourcompany.com) | Registry feed + Levenshtein distance analysis | < 24 Hours |
| Dev team spins up unauthorized API | Certificate Transparency log monitoring | Near Real-Time |
| Failed DNS migration (NS Drift) | Authoritative vs. Delegated NS comparison | Daily |
| Missing SPF on a parked domain | DNS TXT record analysis | Daily |
When CyberFurl detects a domain security risk, we provide precise, actionable guidance:
v=spf1 -all) to instantly lock down unused domains against email spoofing.vs. Point-in-Time Scanners: A vulnerability scan run on the 1st of the month won't catch the subdomain takeover vulnerability introduced by a marketing campaign that ended on the 15th. CyberFurl is continuous.
vs. Manual Audits: Security teams cannot manually review thousands of DNS records or constantly monitor global domain registries. CyberFurl automates this surveillance at scale.
vs. Traditional Vulnerability Assessments: Finding a SQL injection requires knowing where the server is. Finding a lookalike domain requires monitoring the entire internet. CyberFurl provides the outside-in visibility that traditional tools lack.
Secure the foundation of your attack surface. Discover dangling subdomains, hidden shadow IT, and lookalike threats today.
Instantly map your domain footprint, detect subdomain takeovers, and monitor for brand impersonation.
Scan Your Domains FreeDomain security monitoring is the continuous surveillance of an organization's domain portfolio and external digital presence. It involves tracking DNS records for unauthorized changes, detecting dangling subdomains vulnerable to takeover, identifying the registration of lookalike or typosquatting domains, and ensuring core security controls (like DNSSEC and registrar locks) remain active.
A subdomain takeover occurs when an organization has a DNS record (often a CNAME) pointing to a third-party service (like GitHub Pages, AWS S3, or Heroku) that they no longer control or have deleted. An attacker can register that exact resource on the third-party provider and effectively hijack the subdomain, serving their own malicious content under your trusted brand.
CyberFurl continuously ingests newly registered domain feeds from all major Top-Level Domains (TLDs). We apply fuzzy matching, Levenshtein distance algorithms, and homoglyph analysis to detect any new domain registrations that are visually or phonetically similar to your brand, alerting you before the attacker can launch a phishing campaign.
DNS drift (or NS drift) happens when the authoritative nameservers configured at the domain registrar no longer match the active nameservers handling traffic. This often occurs during incomplete migrations. It leaves the domain vulnerable to hijacking if an attacker registers the abandoned nameserver infrastructure.
Traditional vulnerability scanners look for software flaws on known IP addresses. They do not analyze DNS configurations, monitor external domain registries for brand impersonation, or detect dangling CNAMEs. Domain security requires outside-in intelligence, looking at how the internet routes to your assets, not just the assets themselves.
Yes. CyberFurl monitors global CT logs in near real-time. If a new SSL/TLS certificate is issued for any of your domains or subdomains, we alert you immediately. This is the fastest way to detect unauthorized shadow IT deployments or domain hijacking attempts.
CyberFurl continuously monitors your DNS configurations. Critical records and controls are evaluated multiple times a day to ensure rapid detection of unauthorized changes, configuration drift, or new exposures.
Yes. By automatically discovering all domains associated with your organization (via WHOIS correlation, CT logs, and passive DNS), CyberFurl helps identify rogue domains, forgotten marketing campaigns, and subsidiary infrastructure, enabling centralized governance.