Attack surface assessment

Gain complete visibility into your external footprint: Every domain, cloud instance, and exposed asset that shapes your digital risk.

Your attack surface extends far beyond your firewall. Rhymetec’s External Attack Surface Assessment uncovers everything connected to your organization across the internet—from public infrastructure to leaked information tied to your brand. Our analysts combine technical reconnaissance and open-source intelligence (OSINT) to map your external presence and highlight exposures. The result is a clear picture of your digital risk—and an actionable plan to reduce it.

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Comprehensive external visibility, without the guesswork

A single assessment that reveals what’s exposed, what’s at risk, and how to fix it.

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Attack surface assessment

Rhymetec’s Attack Surface Assessment goes beyond traditional scanning by combining technical asset discovery with intelligence-driven analysis of your external digital footprint.

 

We identify:

  • Public-facing domains, IPs, subdomains, and forgotten cloud instances
  • Misconfigured or outdated systems exposed to the internet
  • Shadow IT or abandoned assets that expand your risk surface
  • Leaked credentials, brand impersonations, and sensitive data tied to your organization
  • Employee or company data exposure across the open, deep, and dark web

A premium process for complete external awareness

We combine EASM and OSINT techniques to reveal your true digital footprint — and the risks that come with it.

Asset Discovery & Mapping

We identify all internet-connected assets associated with your organization, including registered domains, cloud environments, IPs, and third-party services.

Exposure Analysis

Our analysts detect vulnerabilities, misconfigurations, and outdated systems that expand your external risk surface.

Intelligence Correlation

Using OSINT and dark web monitoring, we uncover leaked credentials, data exposures, and impersonation attempts related to your brand or employees.

Risk Prioritization

Every finding is ranked by severity and business impact, helping your team focus remediation where it matters most.

Reporting & Recommendations

You receive a comprehensive, intelligence-driven report outlining exposures, associated risks, and specific mitigation steps to strengthen your external security posture.

From discovery to direction

 Every engagement concludes with a comprehensive risk intelligence package tailored to your organization.

  • Complete asset inventory across internet-facing infrastructure
  • Exposure summary and risk scoring by category
  • OSINT and dark web intelligence findings
  • Executive report with key insights and business impact overview
  • Technical report with prioritized recommendations
  • Optional follow-up workshop to align remediation priorities and establish continuous monitoring

When to choose an external attack surface assessment

An Attack Surface Assessment is ideal for organizations looking to understand and reduce their exposure before something—or someone—finds it first.

Before a penetration test or audit to establish a clear baseline

 

During mergers, acquisitions, or divestitures

 

When expanding into new cloud environments or global regions

 

To assess third-party or brand exposure across digital ecosystems

 

As part of continuous monitoring or threat intelligence initiatives

Certifications our testers hold

CHFI

OSWA

OSWE

OSCP

OSED

OSCE

OSEP

CISSP

COMPTIA

CPENT

BSCP

CHFI

OSWA

OSWE

OSCP

OSED

OSCE

OSEP

CISSP

COMPTIA

CPENT

BSCP

CHFI

OSWA

OSWE

OSCP

OSED

OSCE

OSEP

CISSP

COMPTIA

CPENT

BSCP

Have a question?

We can help.

What is EASM?

External Attack Surface Management (EASM) is a cybersecurity practice that continuously discovers, monitors, and evaluates everything an organization has exposed to the internet—such as domains, IPs, subdomains, cloud assets, and public data. The goal of EASM is to provide ongoing visibility into external risks so companies can detect new exposures, prioritize remediation, and reduce their overall attack surface.
While true EASM involves continuous monitoring and automated discovery, Rhymetec’s External Attack Surface Assessment offers a point-in-time version of that same visibility. It provides a comprehensive snapshot of your external footprint, helping you understand what’s exposed before you invest in continuous management.

How does an attack surface assessment differ from External Attack Surface Management (EASM)?

An attack surface assessment is a one-time evaluation. It’s ideal for establishing a baseline of your external exposure, identifying forgotten or misconfigured assets, and assessing digital risk before an audit, penetration test, or merger.
In contrast, EASM is an ongoing managed service that continuously scans and tracks changes to your external footprint. It uses automation and threat intelligence to detect new assets or exposures as they appear.
Rhymetec’s assessment delivers the same level of depth and intelligence you’d expect from EASM—just focused on giving you a clear, actionable starting point.

Why choose an attack surface assessment over External Attack Surface Management (EASM)?

Organizations often begin with an attack surface assessment to gain a clear, measurable understanding of their current external exposure before investing in continuous management. This approach provides immediate, actionable insights—revealing misconfigurations, exposed systems, or leaked data that expand your risk surface.
For many teams, a one-time assessment delivers exactly what’s needed to prepare for penetration testing, compliance audits, or cloud security improvements. It’s a focused way to uncover hidden assets and risks without committing to a full-time monitoring platform.

How long does an External Attack Surface Assessment take?

Most External Attack Surface Assessments are completed within one to two weeks, depending on your organization’s size and the number of assets discovered.

Security with benefits

What our clients are saying about us

Rhymetec helped us to become ISO 27001 and SOC 2 Type 2 compliant in 1/3 the time we were expecting. As an early stage B2B startup, this allowed us to go afer enterprise customers months ahead of schedule and got us to become more competitive vs the established players.

Agentnoon

CTO & Cofounder

We went from zero to ISO 27001 and SOC 2, Type 2, in a much shorter time than anyone else was telling us. Rhymetec worked with me to get our organization the security certifications it needed and I will always be grateful for their professionalism and support because their help solved a very real business problem for us.

Tenjin

VP

Working with Rhymetec’s team is great. We use their vCISO program and work closely with a Cloud Compliance Analyst. The Rhymetec team is knowledgeable, responsive and flexible. It is like having an additional team member to handle security and technical issues.

ThinkIQ, Inc.

Director of Operations

Rhymetec did an amazing job and we sailed through our ISO 27001 audit and SOC2 audit. Our vCISO has been great to work with.

ContractSafe

President

We engaged with Rhymetec to complete our first ISO 27001 internal audit. They executed a very efficient engagement and helped us through the process. They produced quality deliverables within the timelines promised.

mTuitive Inc.

CISO

For any companies going through the SOC 2 compliance process, Rhymetec should be a required resource. They combine expert knowledge with a low-effort service model that doesn’t tie up our team’s capacity. I’d recommend Rhymetec to anyone.

Cartful

CEO

Rhymetec has been an absolute lifesaver. Not only is our vCISO super knowledgeable about all things SOC2, but was an absolute delight to work with. There is no way we would have reached this point without our vCISO and Rhymetec’s help.

D3Clarity, Inc.

Operations Associate

The testing was very thorough and complete. Communication and feedback afterwards was easy to understand and very fast. We were able to quickly identify and fix all the issues that were brought up and the team was able to verify the fixes without issue.

Graphium Health

Senior Application Architect

I appreciated how easy it was to schedule the internal audit, and how my Rhymetec compliance analyst helped me understand what I needed to do to prepare for both their internal audit and also our subsequent external audits.

Duolingo

Senior Security Risk Program Manager

Rhymetec was very professional and helpful. They made it easy to schedule the ISO Internal Audit, the response was clear and helpful. I’ll definitely be working with them again in the future.

PlaybookUX

CEO

The team at Rhymetec was incredibly easy to work with from start to finish. They were able to accommodate our extended Penetration Testing schedule for remediation and retesting. And the ability to communicate directly with the testers via Slack was a time saver and enormously helpful.

Fond Technologies, Inc.

Principal Software Architect

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