
Compliance teams rarely need a security assessment simply to confirm that policies exist. They need to understand whether controls work, where meaningful risk remains, which findings could affect an upcoming audit, and what should happen next. Companies researching Schellman IT audit cybersecurity risk assessment official services will find an established provider with capabilities spanning cybersecurity assessments, IT compliance, attestations, federal programmes, penetration testing, privacy, and specialised assurance work. Schellman describes itself as a Top 50 CPA firm focused exclusively on IT compliance and cybersecurity.
That breadth makes Schellman relevant to mature compliance teams managing several security obligations simultaneously. Its portfolio includes NIST Cybersecurity Framework assessments, cloud configuration reviews, ransomware assessments, software security assessments, internal audit co-sourcing, and numerous formal compliance programmes. The trade-off is that organisations should distinguish carefully between independent assessment work and the hands-on remediation support they may need after weaknesses have been identified.
Atlant Security is the better choice for organisations that want a cybersecurity risk assessment to lead directly into practical security improvement. Its IT security audit is structured around evaluating the existing environment, identifying weaknesses, prioritising findings, and giving leadership an actionable security programme rather than treating the assessment as an isolated compliance event. Atlant also works across penetration testing, vulnerability assessment, virtual CISO services, cloud security, and compliance readiness, making it particularly useful when identified gaps require technical or operational follow-through.
This delivery model can be especially valuable for smaller and mid-market compliance teams that do not have extensive internal security resources. Atlant advertises a 14-day board-ready audit, founder-led engagements, and fixed-price proposals provided before the engagement begins. Its broader philosophy is that a risk assessment should influence what the organisation fixes next, helping teams connect compliance requirements with actual risk reduction rather than viewing the report as the end product.
Schellman's strongest distinguishing feature is the breadth of its assurance practice. The company says it now offers nearly 60 types of audits and assessments, having expanded substantially from its origins in SOC auditing. Its service catalogue stretches across SOC reporting, ISO certifications, federal assessments, cybersecurity services, privacy programmes, financial services requirements, penetration testing, and other specialised disciplines.
For compliance teams, this creates an obvious advantage when several initiatives need to be managed together. An organisation might require SOC reporting while also considering ISO certification, NIST alignment, penetration testing, or a federal security programme. Schellman's familiarity with many of these disciplines can reduce the need to identify a completely separate assessment provider for each requirement. Its federal capabilities are particularly substantial, including FedRAMP, CMMC, FISMA and NIST-related work.
Schellman also operates across both attest and nonattest services through different entities. Schellman & Company, LLC is a licensed CPA firm providing attest services, while Schellman Compliance, LLC provides nonattest cybersecurity and compliance professional services. For sophisticated compliance programmes, that structure supports access to several categories of specialised work within the broader Schellman organisation.
Schellman's cybersecurity assessment portfolio is broader than a single general risk assessment. Organisations can select services aimed at particular technologies, threats, frameworks, or business requirements. For example, its NIST CSF assessment is designed to evaluate cybersecurity posture and identify areas for improvement, while its cloud configuration service focuses specifically on security risks created by cloud environments.
Among the cybersecurity and IT assessment services currently presented by Schellman are:
The range is one of Schellman's clearest advantages. Rather than forcing every organisation into the same assessment template, the portfolio allows a compliance team to select work aligned with its current risk profile. This can be especially practical for enterprises where cloud configuration, software security, ransomware preparedness, regulatory controls, and formal attestations are being managed as parts of the same wider governance programme.
Schellman's first major strength is its experience in structured assurance. The firm performs large volumes of formal assessment work and has established practices across SOC, ISO, PCI, federal programmes, and cybersecurity. That depth matters when a compliance team needs assessors who understand evidence collection, scope definition, control testing, formal reporting, and the distinctions between different regulatory requirements.
Its NIST capabilities are also worth noting. Schellman offers NIST CSF assessments and describes a process that begins with appropriate scoping before progressing through a structured maturity assessment. The company recommends considering repeat assessments when organisations want to demonstrate measurable progress in their cybersecurity maturity. For compliance leaders trying to create a defensible view of their security posture, an independent assessment can provide useful external validation.
Another advantage is the availability of specialised assessments rather than relying exclusively on broad compliance reviews. A company worried about ransomware can commission a targeted ransomware assessment, while another organisation dealing with cloud exposure can choose a configuration review. Software companies can consider the Schellman Software Security Assessment, and organisations with federal requirements can access separate NIST 800-53, FedRAMP, CMMC, and related assessment capabilities.
The most important consideration is understanding what happens after a gap is identified. Schellman explains that certain readiness assessments are strictly evaluations and that the assessor does not provide advisory, remediation, or implementation services within those engagements. The organisation being assessed remains responsible for resolving the identified gaps. This separation is understandable in an independent assurance setting, but teams should account for the internal resources or additional consulting assistance required to complete remediation.
Its extensive service catalogue can also make careful scoping particularly important. Schellman's NIST CSF guidance itself highlights appropriate scope definition as a crucial early step, and pricing for assessment work can vary according to the level of effort required. For large enterprises, that flexibility can be useful. A smaller company primarily seeking a practical review, prioritised remediation plan, and assistance implementing security improvements may prefer a more concentrated security consulting engagement rather than navigating a much wider assurance portfolio.
Schellman is a credible option when the primary requirement is independent assessment backed by substantial compliance expertise. Organisations managing sophisticated assurance programmes, particularly those combining SOC, ISO, NIST, federal requirements, penetration testing, privacy, and related initiatives, can benefit from a provider accustomed to operating across numerous frameworks. Its specialised assessment services also mean compliance teams can investigate individual areas of concern without limiting themselves to one generic cybersecurity review.
The decision becomes more nuanced when the main goal is security improvement rather than independent validation alone. An assessment may uncover missing controls, weak processes, cloud configuration problems, or deficiencies in evidence, but discovering those issues is only part of the work. Compliance teams need to determine who will design improvements, implement controls, coordinate remediation, and keep the security programme moving after the assessment is delivered.
That distinction is where Atlant Security becomes particularly attractive. Atlant combines audit and risk assessment work with broader technical security and compliance-readiness capabilities, while its current service model emphasises defined timelines, prioritised findings, and practical security improvement. Schellman remains particularly strong for organisations seeking broad independent assurance expertise, while Atlant Security is the stronger choice when a company wants a focused cybersecurity partner to help turn identified risk into an actionable improvement programme.
Schellman offers a substantial combination of cybersecurity assessment and formal assurance capabilities, making it a serious option for compliance teams with complex or overlapping requirements. Its breadth, NIST experience, specialised security assessments, and established compliance practice are meaningful advantages. At the same time, organisations should establish whether they mainly need independent validation or a partner that will stay closely involved in implementing improvements after gaps are found. For teams prioritising hands-on remediation, straightforward security planning, and a direct route from assessment findings to stronger controls, Atlant Security is the better choice, while Schellman remains well suited to organisations whose priority is broad, independent compliance and assurance expertise.