24/7 External Monitoring · Rapid Takedowns
You can't protect
what you can't see.
Lookalike domains · Brand impersonation · Dark web exposure · External attack surface
DomainGuard maps what an attacker maps first: your owned and vendor domains, lookalike impersonation domains, credentials traded on the dark web, and the services exposed at your edge. We detect and drive the takedown 24/7, so your team isn't chasing it.
100% Customer Satisfaction
DomainGuard's monitoring solution is the trusted choice for brands across industries, ranging from cutting-edge startups to century-old financial institutions.
Since launching in 2021, DomainGuard has proudly retained 100% of our External Monitoring customers.

Why Monitoring and Consulting?
DomainGuard's founders spent decades on the offensive side of security. Hundreds of authorized cyberattacks against America's largest enterprises across financial services, healthcare, manufacturing, and government taught us where attackers look first, which controls fail under pressure, and how lookalike infrastructure and brand abuse get weaponized.
Today we run that same playbook in reverse. Continuous external monitoring catches what is in flight; consulting engagements harden what monitoring sees and validate what it should see next. The two compound, sharing one team and decades of context on how attackers actually move.
How we Discover Threats and Guard your Domain.
Lookalike domain threats, automated takedowns, certificate tracking.
- 24/7 Monitoring
- Lookalike Domains
- New Domains
- Subdomain Takeover
- Rapid Takedowns
- Weekly Reports
- Platform Access
- Certificate Tracking
Brand impersonation across app stores, social, dark web, and key employees.
- App Stores
- Social Media
- Search Engine Scans
- Search Engine Ads
- Dark Web
- Key Employee Impersonation
- Data Broker Removals
Continuous attack surface monitoring of your external infrastructure.
- Attack Surface Monitoring
- Sensitive Services Alerting
- Live Host Statistics
- Scope Management
- New System Alerting
- Custom Integrations
- External Infrastructure
Authorized cyberattack simulation by certified pros to evaluate your security controls.
Learn moreBeyond network testing. Code, logic, and behavior of your custom applications.
Learn morePhishing, vishing, and continuous monitoring for dark web exposure of your accounts and credentials.
Learn moreArchitecture, configuration, and logging review against cloud security best practices.
Learn moreSimulate attacks across every layer to validate logging coverage and alert precision.
Learn moreWhat Are People Saying?
Vendors will always tell you customer service is their priority business model, DomainGuard backs it up with actions!
DomainGuard's external monitoring is critical for my role; I can't imagine not having the monitoring they provide.
DomainGuard has a business model of competitive pricing, high service quality, and responding to customer needs.
DomainGuard provides visibility of external threats we do not get from any other tool.
DomainGuard identified several sensitive systems we had open to the internet as a result of a recent acquisition.
DomainGuard helps us identify and block look-alike domains, before they target our employees in a phishing attack.
What People Ask Us First.
DomainGuard is a managed external cybersecurity monitoring service. We watch your approved and vendor domains, your brand presence across app stores, social, search ads, and the dark web, and your internet-facing infrastructure, all 24/7. When a lookalike, impersonation, or exposed asset shows up, our team drives the takedown directly with the registrar, platform, or host so your team is not stuck chasing it.
Our fastest takedowns are under 120 seconds from malicious-intent detection to takedown submission. Average takedowns are measured in hours, not days. The full timeline depends on the registrar's response and the venue (search engine, social platform, app store). DomainGuard runs the takedown workflow on your behalf so your team does not need to chase registrars, hosts, or platform abuse desks.
Continuous data harvesting and analysis algorithms filter the bulk of non-threats automatically. Every alert that reaches you is triaged and validated first, so DomainGuard sees more, flags less, and what we flag is actionable. False positives erode trust and waste your team's time, and we commit to that step before anything reaches you.
Yes. The API Integration tier pushes DomainGuard threat intelligence into SOAR, SIEM, and ticketing systems. It works alongside any of the three monitoring tiers and lets you ingest detections, takedown events, and asset changes into your existing alerting and response workflows. Common destinations include Splunk, Sentinel, Cortex XSOAR, ServiceNow, and Slack.
Mid-to-large enterprises with high-value brands, domains, or trademarks. Customers span financial services, fintech, healthcare, retail, SaaS, manufacturing, higher education, and pharmaceutical data. Sizes range from regional credit unions and community banks to global manufacturers and century-old financial institutions. If a brand or domain is worth impersonating, monitoring is worth running.
Go Deeper.
Field-tested takedown guides, threat-pattern analysis, and case studies pulled from real DomainGuard operations.
Read the blogPlain-English definitions for phishing, lookalike domains, homoglyphs, brandjacking, attack surface, vishing, and BEC.
Open the glossaryNineteen Q&As across product, comparisons, and engagement. Categorized so you can jump to definitions or pricing details.
Browse the FAQ