Assumed Breach Network Security Assessment

Assumed Breach Network Security Assessment

Measure Adversarial Impacts

Controlled lateral-movement exercise to validate segmentation, privilege paths, and XDR/NDR/SIEM detection.

Starting from a foothold you define (e.g., rogue network device, VPN/domain user creds or a test workstation), we emulate a post-compromise attacker to quantify impact. We map and validate privilege-escalation paths, segmentation gaps, and control effectiveness across AD/Windows, identity, and management planes.

Techniques may include command and control (C2) establishment, persistence mechanisms, credential harvesting/safe replay, local privilege escalation, service account abuse, fileshare enumeration, Kerberoasting/AS-REP exposure checks, AD CS misconfigurations, account delegation misconfigurations, simulated data exfiltration and insecure protocol use, all executed under strict Rules of Engagement, to protect production systems and minimize service disruptions.

In parallel, we assess XDR/NDR/SIEM visibility and response:
what tripped, why, how fast, and was anything missed?

Deliverables include successful attack-path diagrams and prioritized remediation guidance for Executives and Security Teams.

Who it’s for

Teams with cloud-first Azure, hybrid AD or on-premesis AD environments wanting evidence of real-world lateral movement risk and adversary tactics/techniques detection performance.

Ready to put your SOC/vendors in the thunderdome?

Schedule a meeting with a LemurSec remote operator!

Included activities
Segmentation & tiering validation, C2, simulated data exfil
Controlled lateral-movement evaluation
XDR/NDR/SIEM visibility and response observations
Attack-path diagram and prioritized remediation (effort vs. risk)
Executive Summary report with a technical appendix
Retest specific TTPs and publish updated report

How it works

  1. 1
    ROE & safety planning
  2. 2
    Access provisioning
  3. 3
    Recon & path analysis
  4. 4
    Controlled exploit chaining
  5. 5
    Detection/response review
  6. 6
    Outbrief
  7. 7
    Retest
FAQ

Answers to common questions

Everything you need to know about our GRC & security assessments, from retests to safety and timelines.

Is this a red team or phishing test?

No. This is a scoped, remote, post-compromise security evaluation.

Will this impact production systems?

We design for safety (throttled, change-controlled, read-only where possible) and schedule off-hours as needed.

Can you test XDR/NDR/SIEM?

Yes! Our internal exploit development resources safely simulate a wide range of both high and low skill adversary techniques to evaluate alerting and response without using destructive malware.

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