Contact Us

Services

Suite of Services

Schellman began as a SOC audit firm 20+ years ago. While we still issue more than 2,000 SOC reports each year, our clients’ trust has propelled our expansion. Today, we offer nearly 60 types of audits and assessments delivered by full-time employees. No outsourcing. No compromises.

Download a PDF of All Services

Learning Center

Our Technology

About Us

About Us

Schellman is the only Top 50 CPA firm focused exclusively on IT Compliance and Cybersecurity, and we’re the #1 service provider for FedRAMP Assessments.Our industry-leading NPS scores, client retention, and employee retention (low-to-no team churn = less audit fatigue) mean our clients experience greater continuity and quality.We also understand how distracting unplanned work can be, so we focus on client-centric KPIs to help keep your business moving uninterrupted.

ISO Certificate Directory

Services

Services

View All Services

SOC & Attestations

SOC & Attestations

SOC 1 / SSAE 18 Examination

SOC 2 Examination

SOC 3 Examination

SOC for Supply Chain

SOC for Cybersecurity

C5 Attestation

CSA STAR Programs

Payment Card Assessments

Payment Card Assessments

PCI DSS Validation

PCI SSF

PCI P2PE Validation

PCI PIN Assessments

PCI 3DS Compliance

ISO Certifications

ISO Certifications

ISO 27001

ISO 42001

ISO 27701

ISO 9001

ISO 22301

ISO-20000-1

Privacy Assessments

Privacy Assessments

APEC Certification

GDPR Assessment

International Privacy Assessments

US State Privacy Assessments

Microsoft SSPA/DPR Assessment

Privacy Program Assessment

FERPA Assessment

EU Cloud Code of Conduct

Federal Assessments

Federal Assessments

FedRAMP®

CMMC / NIST SP 800-171

FISMA/NIST

ITAR

CJIS

IRAP

FTC Consent Decrees

Healthcare Assessments

Healthcare Assessments

HITRUST CSF Certification

HIPAA Compliance

HIPAA Express

EPCS-DEA Audits

Health Data Host (HDS) Certification

Penetration Testing

Penetration Testing

Application

Network

Mobile

Social Engineering

Cloud

Physical

Hardware and IoT

Advanced Series

Cybersecurity Assessments

Cybersecurity Assessments

Cloud Configuration Assessments

Ransomware Assessments

NIST Cybersecurity Framework Assessments

Schellman Software Security Assessment (S³A)

TISAX®

SWIFT Customer Security Programme

Internal Audit Co-Sourcing

Crypto and Digital Trust

Crypto and Digital Trust

Schellman Training

Schellman Training

ESG & Sustainability

ESG & Sustainability

AI Services

Learning Center

Our Technology

About Us

About Us

Leadership Team

Leadership Team

Corporate Social Responsibility

Corporate Social Responsibility

Careers

Strategic Partnerships

Strategic Partnerships

ISO Certificate Directory

Blog

The Schellman Blog

Stay up to date with the latest compliance news from the Schellman blog.

Ryan Warren

Ryan Warren is a Senior Penetration Tester with Schellman in the Little Rock, AR area, where he performs several offensive security assessments including internal/external network testing, social engineering, and web application tests. Prior to joining Schellman in 2022, Ryan worked in city government as an Information Security Coordinator, which included vulnerability management and incident response.

Blog Feature

Penetration Testing

How to Attack Active Directory: Which Training is For You?

By: Ryan Warren
November 1st, 2024

While many companies are moving to the cloud, it's still common to find Active Directory (AD) deployed locally in Windows environments. During internal network pen tests, I was pretty comfortable with lateral movement and privilege escalation (via missing patches or LLMNR/NBT-NS/IPv6, open network shares, etc.) but felt lacking in how I could leverage attacks against AD to provide more impact during the assessment. In my journey to get better at attacking AD, I was able to enroll in different free and paid courses. This blog post will provide you with an overview of the four I found to be most beneficial personally.

{