Security service

External Attack Surface Assessment

OSINT-driven reconnaissance and external enumeration to map domains, subdomains, exposed services, certificates, public assets, and visible risk.

3-5 business daysProject-based

Outcome

A clear exposure map with verified assets, risk-ranked findings, and concrete hardening actions before attackers or auditors find the same issues.

01

Public asset and subdomain inventory

Pre-launch external exposure review

02

DNS, certificate, and open-source intelligence review

Company domain and subdomain discovery

03

External port and service fingerprinting

Cloud and public service exposure review

04

Repository and exposed secret signal checks

Acquisition or vendor surface review

05

Risk-ranked remediation plan

Post-incident visibility check

What you receive

  • External attack surface report
  • Asset and subdomain inventory
  • Exposed service summary
  • Evidence-backed risk findings
  • Remediation priority list

Methodology

  • OSINT Framework
  • PTES intelligence gathering
  • Nmap service enumeration
  • Passive DNS analysis

Scope

Public-facing domains, subdomains, IPs, DNS records, certificates, web entry points, public repositories, and exposed network services.

Details

What to expect from this engagement

What is included?

A structured discovery engagement that shows what your organization exposes to the internet. I combine passive OSINT, DNS and certificate review, subdomain discovery, public repository checks, Nmap-based service enumeration, web fingerprinting, and risk triage to build a clean view of your public attack surface.

Who is it for?

Companies, founders, and technical teams that need a reliable view of their public exposure before deeper testing.

What do you need to provide?

Written authorization, primary domains, organization name, known IP ranges if applicable, and assets that must stay out of scope.

Next step

Turn this into scoped security work.