
Assurance and clarity for every stakeholder
Whether you're certifying a new system or updating your documentation, a robust SSP is essential. We engage with project teams, system owners, certifiers, accreditors and other stakeholders to define appropriate controls and ensure your plan reflects your security responsibilities in full.
- Aligns to NZISM controls and risk environment
- Provides structured input from business and technical owners
- Covers stakeholder roles, key security measures and rationale
What to expect from a compliant SSP
Control selection and rationale
Tailored to your system, aligned with NZISM
We use the latest NZISM baseline and threat intelligence to guide SSP development. Our consultants identify the relevant controls for your system and provide justification and guidance on how each control is applied.
- Based on functionality, classification and threat profile
- Includes control rationale and stakeholder responsibilities
- Meets NZISM expectations for assessment and accreditation

Structured development, step by step
Proven experience in certified government environments
Frequently asked questions
What is a System Security Plan (SSP)?
An SSP outlines the information security controls and responsibilities for a system. It’s used to demonstrate compliance with NZISM and support certification and accreditation.
Who is responsible for contributing to an SSP?
Multiple stakeholders are involved - including system owners, project teams, security leads, IT operations and certification authorities.
What should an NZISM-compliant SSP include?
It should identify relevant controls based on classification, describe how they’re implemented, include key management where applicable, and reflect all stakeholder inputs.
How often should an SSP be reviewed?
SSPs should be reviewed during system change, reaccreditation, or if NZISM is updated. Agencies are encouraged to use the latest baseline version at all times.
Can Bastion help with certification preparation?
Yes. We provide advisory and documentation services to prepare your SSP, support stakeholder review, and address feedback from certifiers.
Talk to an expert
Shortland Street,
Auckland 1010 New Zealand
Brandon Street
Wellington 6011 New Zealand
120 Spencer Street
Melbourne 3000 Australia