Seigur Ltd

SEIGUR is a specialist Legal and Cyber IT Resilience consultancy

Private Sector – Public Sector – Space – CNI

By combining deep Legal and Cyber expertise, we help organisations strengthen their defences, improve operational resilience, and enhance the security of their services.

Cyber Security Consultancy Services:

Core Cyber Consultancy Services

Cyber Security Consultancy

Enterprise Security Architecture

NCSC‑assured Cyber Advisory Services

vCISO / Fractional CISO Services

Operational Technology (OT) and Industrial Control Systems (ICS) Cyber Consultancy

Accredited Cyber Certification Services

NCSC Cyber Essentials

Ministry of Defence (MoD) Defence Cyber Certification (DCC)

IASME Cyber Assurance

Security Assurance & Resilience

Cyber Security Assurance and Resilience Assessments

NCSC’s Cyber Assessment Framework (CAF)

NIST CSF and NIST SP 800-53

Governance, Risk & Compliance (GRC)

Cyber Security Governance Framework Development

Risk Management and Risk Assessment Services

Policy, Standards and Procedure Development

Compliance and Control Mapping (Including NIST CSF, NIST SP 800‑53, ISO/IEC 27001, CAF, CIS Controls)

Third‑Party / Supply Chain Risk Management

Regulatory and Audit Readiness Support

Legal Services:

Sales contracts

Template design, online terms, new product content, interpretation, negotiation, impact analysis & termination

Procurement contracts

Negotiation, design of procedures to aid onboarding

Data privacy

Data flow assessments, controller / joint controller / independent controller / processor / sub-processor agreements, internal GDPR compliance, and security measures

Dispute resolution

Assessment of claims, briefing notes, pre-action correspondence, letters before action, mediation-style meetings, settlement agreements

Policies and procedures

Design, updates and training

Space Cyber Consultancy Services

Space Systems Cyber Security

End‑to‑end cyber consultancy for spacecraft, ground segment, TT&C, mission operations, and downstream data services

Space‑Focused Security Architecture

Enterprise and mission security architecture aligned to NCSC, UK Space Agency, European Space Agency (ESA), and NASA expectations for satellites, constellations, launch systems, and ground infrastructure

NCSC‑Assured Cyber Advisory

Specialist guidance for UK space‑sector SMEs

Fractional CISO for Space Organisations

Strategic cyber leadership for operators, manufacturers, launch providers, and space‑data service companies

Accredited Cyber Certification Support

Certification and assurance for suppliers working with MoD, UK Space Agency, and defence supply chain partners

Space‑Relevant Cyber Certification & Assurance

NCSC Cyber Essentials assessment and certification for Space SMEs

MoD Defence Cyber Certification (DCC) for space contractors

IASME Cyber Assurance for space supply‑chain organisations

Space Mission Security Assurance: threat modelling, mission‑phase risk analysis, and resilience assessments for spacecraft, payloads, and ground systems

Security Assurance & Resilience for Space Missions

Space systems cyber‑resilience assessments across spacecraft bus, payload, comms links, ground segment, and mission operations

NCSC Cyber Assessment Framework (CAF) for space operators delivering CNI services

NIST CSF & NIST SP 800‑53 mapping tailored to space‑specific controls

Governance, Risk & Compliance (GRC) for Space Organisations

Space cyber governance frameworks aligned to UK Space Agency, ESA, and NASA expectations

Space mission risk management and threat assessment, including RF jamming, spoofing, uplink hijacking, ground‑station intrusion, and supply‑chain compromise

Policy, standards, and procedure development for mission, launch, and ground‑station operations

Compliance mapping to NCSC CAF, NIST CSF, NIST SP 800‑53, ISO/IEC 27001, CIS Controls, ESA ECSS, and MoD standards

Third‑party and supply‑chain risk management across the space ecosystem

Regulatory and audit readiness for MoD, ESA, UK Space Agency, and defence‑prime audits (DCC L0–L3, NCSC CAF, ISO/IEC 27001)