PCI DSS Compliance & Consulting Services
Get PCI DSS compliant with clear guidance and practical support. Understand your PCI DSS requirements, reduce risk, and move forward with confidence.
- PCI DSS 4.0.1 compliance support
- Experience supporting merchants and service providers
- QSA-led consultancy and assessment support
- Clear guidance on your PCI DSS requirements
- Flexible support tailored to your organisation
Supported by recognised credentials and trusted by organisations across a range of industries.
PCI Consultancy Services from OmniCyber
Getting PCI DSS compliant isn’t always straightforward, especially when you’re trying to understand what applies to your environment and what’s actually required.
Working with OmniCyber, you’ll get:
- Clear guidance on your PCI DSS compliance requirements and how they apply to your organisation
- Support to define scope and understand your cardholder data environment (CDE)
- Help identifying gaps in your current controls before assessment
- Preparation for PCI DSS 4.0.1 compliance and validation activities
- A clear path forward, whether you’re starting from scratch or improving an existing programme
The focus is on helping you move forward with confidence, without overcomplicating the process.
What is PCI DSS and Why It Matters?
PCI DSS (Payment Card Industry Data Security Standard) is a global set of PCI security standards designed to protect payment card data and reduce fraud. If your organisation stores, processes, transmits, or can impact the security of cardholder data, PCI DSS compliance is required.
PCI DSS compliance is not just an IT requirement. It’s a business risk obligation that affects how you protect customer payment data, maintain trust, and avoid financial penalties.
It applies to:
- Merchants that accept card payments
- PCI DSS service providers supporting payment processing
- Third parties that can impact payment security
The purpose of PCI DSS is to:
- Protect cardholder data
- Reduce the risk of data breaches
- Ensure consistent security controls across your environment
PCI DSS is enforced by payment brands and acquiring banks, and compliance is a contractual requirement for organisations handling card payments.
Understanding PCI DSS 4.0.1 Compliance
PCI DSS v4.0.1 is the current version of the standard, replacing earlier versions and reflecting how organisations manage payment security today. It became the active standard in 2025 and applies to all organisations handling cardholder data.
The focus has shifted from point-in-time compliance to ongoing control effectiveness.
In practice, this means:
- Security controls must operate continuously: Compliance is no longer about preparing for an annual audit. Controls must work as part of day-to-day operations
- Scope and environment must be clearly defined: Your cardholder data environment (CDE) must be understood, controlled, and justified
- You need to demonstrate controls are effective: It’s not enough to document policies. You must show that controls are working in practice
- Governance and accountability are more important: Roles, responsibilities, and ownership of controls must be clearly defined
PCI DSS 4.0.1 enhances security for modern payment environments and requires organisations to maintain a consistent and defensible security posture.
Understanding how these requirements apply to your organisation is key to achieving PCI DSS compliance without unnecessary complexity or delays.
PCI DSS Compliance Requirements Explained
PCI DSS is built around 12 core requirements that define how cardholder data must be protected.
These PCI compliance requirements cover the key areas needed to secure your environment and reduce risk.
At a high level, the PCI DSS requirements include:
- Network security controls: Protecting systems and restricting access to the cardholder data environment
- Secure configuration: Ensuring systems are hardened and not using default settings or credentials
- Protection of cardholder data: Securing data at rest and in transit using strong encryption and controls
- Vulnerability management: Keeping systems up to date, identifying weaknesses, and addressing risks
- Access control: Restricting access to only those who need it and enforcing strong authentication
- Monitoring and logging: Tracking activity across systems to detect suspicious behaviour
- Security testing: Regularly testing controls, including vulnerability scanning and penetration testing
- Security policies and governance: Defining responsibilities, processes, and ongoing security management
These requirements must be applied across your cardholder data environment (CDE), including any systems that store, process, transmit, or could impact the security of cardholder data.
Understanding how these requirements apply in practice is one of the biggest challenges organisations face when working towards PCI DSS compliance.
Who Needs PCI DSS Compliance?
If your organisation accepts card payments or supports payment processing in any way, PCI DSS will apply to you.
PCI DSS applies to any organisation that stores, processes, transmits, or can impact the security of cardholder data (CHD) or sensitive authentication data (SAD).
This includes both merchants and PCI DSS service providers.
Merchants
Any business that accepts card payments, whether online, in person, over the phone, or through outsourced or third-party payment services
Service providers
Organisations that support payment processing or can affect the security of cardholder data, including hosting providers, SaaS platforms, managed service providers, and payment gateways
PCI DSS Service Providers: Additional Requirements
PCI DSS service providers are subject to increased scrutiny due to the level of access and risk they introduce.
In many cases, service providers are required to:
- Undergo independent assessment by a Qualified Security Assessor (QSA)
- Clearly define shared responsibility between themselves and their customers
- Demonstrate isolation between customer environments where applicable
- Maintain enhanced monitoring, testing, and control validation
A breach within a service provider environment can affect multiple organisations, which is why the requirements are more rigorous.
PCI DSS Compliance Levels Explained
PCI DSS validation requirements are determined by transaction volume and enforced by acquiring banks and payment brands.
There are four merchant levels and separate classifications for service providers.
At a high level:
- Higher transaction volumes require more rigorous validation
- Larger organisations may require independent audits (RoC)
- Smaller organisations may complete a Self-Assessment Questionnaire (SAQ)
- Service providers are often subject to stricter validation regardless of size
Even smaller organisations must meet PCI compliance requirements if they handle card payments.
How to Achieve PCI DSS Compliance
Achieving PCI DSS compliance involves more than completing an assessment. It requires understanding your environment, defining scope correctly, and ensuring the right controls are in place and operating effectively.
A typical PCI DSS compliance roadmap includes:
- Defining scope and your cardholder data environment (CDE): Identifying the systems, users, and processes that store, process, transmit, or could impact cardholder data. Getting this right is critical. Too broad increases cost and complexity, while too narrow can leave key systems unprotected.
- Understanding your PCI DSS requirements: Determining which requirements apply to your organisation, based on your environment and validation level
- Gap analysis and risk identification: Reviewing your current controls to identify gaps, weaknesses, or areas that need improvement
- Remediation and control implementation: Addressing identified gaps and putting the required security controls in place
- Validation and assessment: Completing the appropriate validation method, such as a Self-Assessment Questionnaire (SAQ) or a Report on Compliance (RoC)
- Ongoing compliance and monitoring: Ensuring controls continue to operate effectively and evidence is maintained throughout the year
Working with OmniCyber, you’ll have support at each stage of this process, helping you avoid common issues, reduce unnecessary scope, and move forward with a clear understanding of what’s required.
PCI DSS Consultancy & Support
Working through PCI DSS compliance can quickly become complex, especially when you’re trying to understand scope, interpret requirements, and ensure your controls meet the standard.
Working with OmniCyber, you’ll have support throughout the process, helping you move forward with clarity and confidence.
What that looks like in practice:
- Clear guidance on your PCI DSS compliance requirements and how they apply to your environment
- Support defining scope, including your cardholder data environment (CDE)
- Gap analysis to identify where your current controls fall short
- Practical support implementing and improving security controls
- Practical support implementing and improving security controls
- Ongoing support to help maintain compliance and control effectiveness
- Flexible call-off consultancy days, with hourly slots tailored to your requirements
- Transparent, flexible pricing, unused time can be applied to other services
The focus is on helping you get this right, so your compliance reflects how your environment actually operates, not just what’s documented.
PCI DSS Services We Deliver
Whether you need a PCI DSS consultant to guide your approach or full support through assessment and validation, you’ll have access to the services needed to achieve and maintain compliance. The focus is on giving you the right level of support for your organisation, whether you need guidance at specific stages or end-to-end support.
Scope Review
If your scope is too big, you waste time and money protecting systems that may not need rigorous PCI controls. Too small, and you may not be protecting what you should. We workwith you to identify the specifics of your scope, covering payment channels, merchant/service provider levels, transaction volumes, system components, personnel, processes, and service providers.
OmniCyber will review your bespoke business processes and produce a scope diagram detailing your PCI DSS Cardholder Data Environment (CDE), which will give you confidence that all PCI DSS payment channels are covered. While this option is only required for a more detailed PCI RoC review, OmniCyber recommends this review as a minimum, so your organisation can instantly see where cardholder data is stored, processed, transmitted, and how third parties interact.
Self-Assessment Questionnaires (SAQs)
There are 10 different PCI SAQ merchant questionnaires., so determining which SAQ applies to your organisation can be challenging. As part of this service, an OmniQSA will assist you with identifying the appropriate SAQ/s and ensure you know what each applicable PCI DSS requirement means to your organisation.
Omni offers two options regarding the completion of SAQs. Assisted SAQ (aSAQ) Completion involves an OmniQSA working with you to complete the applicable SAQ/s and Attestation of Compliance (AoC) with QSA signature. Attested SAQ (atSAQ) Audit, on the other hand, requires a detailed evidence-based review to check that all answers are correct, meet the standard, and the supporting evidence supports the answer.
Gap Analysis Review
To assess your organisation’s PCI DSS compliance, conducting a Gap Analysis Review with our OmniCyber QSA is recommended. They evaluate your responses in line with your PCI DSS scope and specific requirements for each payment channel. This detailed discussion covers all aspects of your payment processes, depending on your PCI SAQ (or RoC) requirements and the involved payment channels.
A detailed report highlighting the findings will be created as the output of discussions, containing recommendations on how to reduce the current PCI DSS scope and options to reduce compliance costs and ease the burden of PCI DSS.
Report on Compliance (RoC) Audit:
For PCI Level 1 merchants (over 6 million transactions annually) and service providers (over 300,000 transactions annually), an annual PCI Report on Compliance (RoC) is mandatory, performed by a PCI QSA-certified organisation. This annual assessment includes a comprehensive review led by a QSA of your payment channels and an evidence-based evaluation of all in-scope systems, personnel, and processes.
At Omni, we leverage our industry experience and technical understanding to validate your environment against the PCI DSS standard. We ensure your defined scope is correct, and all collated evidence meets the PCI DSS standard. All client evidence is kept secure as per PCI SSC quality standards and retained for 3 years to ensure your PCI RoC is defendable if ever required.
Internal Vulnerability Management
Quarterly internal vulnerability scans of in-scope networks may be required to meet your PCI validation obligations. OmniCyber can help you meet your PCI scanning requirements with our managed scanning solution.
We will help you understand the vulnerabilities that threaten your environment by producing detailed reports that will highlight the items that need resolving to ensure PCI DSS compliance. The quarterly reports detail the severity of the vulnerabilities and offer remediation advice. This is a managed service that we tailor to your environment using a mixture of agent and IP-based scanning to help ensure all in-scope systems are tested cost-effectively.
PCI ASV External Vulnerability Scanning
Quarterly external vulnerability scans of in-scope networks may be required to meet your PCI obligations. The obligations are:
- At least once every three months
- By a PCI SSC Approved Scanning Vendor (ASV)
- Vulnerabilities are resolved and ASV Program Guide requirements for a passing scan are met.
OmniCyber can help you manage your ASV scanning requirements via our user-friendly PCI ASV (Approved Scanning Vendor) portal.
Whilst this PCI DSS requirement is quarterly, it is recommended to scan monthly (at no extra cost with OmniCyber) to ensure your network perimeter is secure.
PCI DSS ASV with Omni includes:
- Portal set-up, user guide, and walkthrough
- Unlimited on-demand and routine scanning
- Automatic ASV certificates
- Automatic vulnerability reporting and recommendations
- Easy false positive reporting
Penetration & Segmentation Testing
Penetration and network segmentation tests are an annual PCI DSS requirement (and good general security practice) depending on your PCI DSS scope.
OmniCyber utilises industry-leading tools and in-house UK-based expertise to actively identify security flaws and vulnerabilities within your internal and external infrastructure and applications. Our team will communicate any security issues throughout the test and detail their findings in a factual report, highlighting severity, and remediation advice.
A Trusted PCI Partner
PCI DSS continues to evolve, and staying aligned with the requirements requires more than a one-off effort. It takes ongoing expertise and a clear understanding of how the standard applies in practice.
OmniCyber supports organisations with PCI DSS compliance across a range of environments, bringing experience and a strong focus on staying current with the latest requirements and expectations.
What that means in practice:
- Up-to-date knowledge of PCI DSS 4.0.1 and how requirements are applied in real-world environments
- Ongoing awareness of changes, clarifications, and evolving assessor expectations
- Clear, accurate interpretation of PCI DSS requirements at each stage
- Experience supporting both merchants and PCI DSS service providers
- A team committed to providing consistent, reliable guidance throughout the process
The focus is on helping you stay aligned with the standard over time, not just at the point of assessment.
Why Choose OmniCyber for Your PCI Compliance?
Choosing the right PCI DSS consultant makes a real difference to how smoothly the process runs and how confident you feel in the outcome.
Organisations choose OmniCyber because they know they’ll be supported by a team that takes the time to get things right and genuinely cares about delivering a high standard of service.
What sets us apart:
- Qualified Security Assessor (QSA) company status, with the technical knowledge and quality control procedures to conduct PCI DSS assessments
- Accredited 3DS assessor, supporting the full range of payment security requirements
- Over a decade of experience in PCI DSS compliance
- A team that is responsive, approachable, and easy to work with
- Clear, practical guidance without unnecessary complexity or confusion
- Experience supporting organisations with PCI DSS compliance across different environments
- Ongoing support that helps you stay aligned with requirements over time
- A consistent, reliable approach that clients come back to year after year
For many organisations, it’s not just about achieving PCI DSS compliance once. It’s about having a team they can rely on as their environment evolves.
What Our Clients Say About Our Services
Organisations across multiple industries trust OmniCyber as their PCI specialist of choice.
“We needed support with PCI DSS compliance and weren’t entirely sure where to start. OmniCyber made the process much clearer from the beginning. They helped us understand our scope, what was actually required, and where we needed to focus. The team were responsive and easy to work with throughout, and we always felt we were getting clear guidance.”
SaaS Company
IT Manager
“PCI DSS 4.0 felt quite overwhelming at first, but working with OmniCyber made it far more manageable. They broke things down in a way that actually made sense and guided us through each step. We always knew what we needed to do next, which made the whole process feel a lot smoother.”
E-commerce Company
IT & Security Manager
“We worked with OmniCyber on our PCI DSS assessment and the experience was really positive. They took the time to understand how our environment actually works and gave clear, practical guidance throughout. Everything felt well explained and straightforward, and we’d definitely work with them again.”
Financial Services Company
Compliance Manager
PCI DSS Compliance Cost & Pricing
The cost of PCI DSS compliance depends on your organisation, your environment, and the level of validation required.
Every organisation is different, so pricing is based on what’s needed to achieve and maintain compliance.
What affects the cost:
- The size and complexity of your environment
- The number of systems, users, and locations in scope
- Whether you are a merchant or PCI DSS service provider
- The level of validation required (SAQ or RoC)
- How prepared your current controls are
- The level of support you need throughout the process
Organisations with well-defined scope and mature controls will typically move through the process more smoothly, while more complex environments may require additional preparation and support.
Get a clear, tailored view of your PCI DSS requirements and what’s needed to achieve compliance.
