Information Security Policy
For Informational Purposes Only
A comprehensive enterprise information security policy aligned with NIST Cybersecurity Framework 2.0 — covering data classification, access control, network and endpoint security, application security, cloud and vendor risk, incident response, business continuity, compliance mapping, and governance structures for organizations of any size.
What This Document Does
An information security policy defines how an organization protects its information assets — customer data, employee records, intellectual property, financial information, and business systems — from unauthorized access, disclosure, modification, and destruction. It establishes the organizational structure, roles, classification standards, technical controls, operational procedures, and compliance requirements that together form the security program.
This template is structured around the NIST Cybersecurity Framework 2.0’s six core functions: Govern, Identify, Protect, Detect, Respond, and Recover. It provides a policy-level framework that can be supplemented with detailed technical standards and procedures specific to the organization’s technology stack and risk profile. The policy applies to all personnel, contractors, and third parties who access the organization’s information systems.
Why Startups Need This
Startups handle sensitive data from day one — customer information, payment credentials, employee records, proprietary algorithms, and investor communications. Enterprise customers, partners, and investors increasingly require documented security policies before they will sign contracts, share data, or complete funding rounds. SOC 2 audits, ISO 27001 certifications, and customer security questionnaires all begin with a written information security policy.
Beyond compliance, startups are disproportionate targets for cyberattacks precisely because they are perceived to have weaker security controls. A data breach can be existential for a startup — the combination of remediation costs, customer loss, regulatory penalties, and reputational damage can exceed the company’s entire runway. A security policy does not prevent all breaches, but it establishes the framework for identifying risks, implementing proportionate controls, detecting incidents early, and responding effectively when they occur.
Key Provisions Explained
Four-Level Data Classification
The policy classifies information into four levels — Public, Internal, Confidential, and Restricted — each with specific handling requirements for storage, transmission, access, sharing, retention, and disposal. The classification drives everything else in the policy: access controls, encryption requirements, backup procedures, vendor requirements, and incident response severity. The Data Classification Matrix defines twelve attributes for each level, from encryption requirements and access approval processes to retention periods and disposal methods.
Identity and Access Control
The policy implements zero-trust principles — never trust, always verify — with role-based access control, mandatory multi-factor authentication, privileged access management, and regular access reviews. Access is granted on a least-privilege basis and requires documented approval from the data owner. The five-tier Access Control Matrix defines authentication requirements, authorization procedures, session management, monitoring, and review frequencies for each data classification level. Privileged accounts (administrators, database access, production systems) receive enhanced controls including just-in-time provisioning, session recording, and quarterly certification.
Incident Response with Severity Matrix
The policy defines a four-level incident severity matrix with specific response times, escalation procedures, and communication requirements for each level. Critical incidents (confirmed breach of restricted data, ransomware, system compromise) trigger immediate response team activation, executive notification, and legal counsel engagement. The breach notification matrix maps notification obligations by data type and jurisdiction, ensuring the organization meets its legal obligations without delay. The policy includes a standing requirement that breach notification should not be delayed while the organization completes its investigation — notification should occur when there is reasonable belief that a breach has occurred.
Vendor and Cloud Security
Third-party vendors and cloud services that access or process organizational data must meet security requirements proportionate to the data classification level. The policy establishes vendor risk tiers with corresponding due diligence requirements, contractual security obligations, ongoing monitoring, and audit rights. The Vendor Security Checklist (Exhibit F) covers ten assessment areas from access controls and encryption to incident response and business continuity. Subprocessor controls ensure that the organization maintains visibility into the entire processing chain.
Compliance Framework Mapping
The policy maps its controls to NIST CSF 2.0’s six functions (Govern, Identify, Protect, Detect, Respond, Recover), with cross-references to SOC 2 Trust Service Criteria and ISO 27001 control domains. This mapping serves two purposes: it demonstrates to auditors and customers that the security program is built on recognized frameworks, and it helps the organization identify gaps when pursuing formal certifications. The Obligations Register (Exhibit A) tracks regulatory, contractual, and voluntary compliance obligations with responsible owners, review dates, and status.
Emerging Provisions (2025–2026)
NIST CSF 2.0 Govern Function
NIST Cybersecurity Framework 2.0, released in 2024, added Govern as a new sixth function that underpins all other cybersecurity activities. The Govern function addresses organizational context, risk management strategy, roles and responsibilities, policy, oversight, and supply chain risk management at the governance level. This template integrates Govern throughout — establishing security governance structures, risk acceptance authority, metrics and reporting, and management review processes that align with the framework’s emphasis on cybersecurity as a board-level and enterprise-wide risk management discipline rather than a purely technical function.
AI-Generated Code and Software Supply Chain
The application security section addresses the growing use of AI code-generation tools, requiring that AI-generated code undergo the same security review, testing, and approval processes as human-written code. It also addresses software supply chain security through software bill of materials (SBOM) requirements, dependency vulnerability scanning, and provenance verification — reflecting the recognition that supply chain attacks are among the most significant and growing threats to application security.
How to Use This Template
1. Assess your current state. Before implementing the policy, conduct a gap analysis comparing your current security practices to the policy’s requirements. Prioritize the gaps by risk and address the highest-risk items first.
2. Classify your data. Map your information assets to the four classification levels. This is the foundation for every other control in the policy — access controls, encryption, vendor requirements, and incident response all depend on knowing what data you have and how sensitive it is.
3. Assign ownership. Every control needs an owner who is responsible for implementation, monitoring, and reporting. The policy defines roles at the governance level, but specific control ownership must be assigned to individuals who have the authority and resources to implement them.
4. Build the incident response playbook. The policy defines the framework, but the organization needs detailed playbooks for specific incident types: ransomware, data breach, account compromise, insider threat, and vendor compromise. Test the playbooks through tabletop exercises before you need them.
5. Scale to your stage. Not every control is appropriate for a five-person startup. Implement the foundational controls first (MFA, encryption, access management, backup, incident response) and layer in additional controls as the organization grows and the risk profile evolves.
Related Forms
This template is provided by Montague Law for informational and educational purposes. It does not constitute legal advice and does not create an attorney-client relationship. Information security requirements vary by industry, jurisdiction, data type, and regulatory framework. Organizations in healthcare, financial services, government contracting, and other regulated industries may be subject to additional requirements not fully addressed in this template. Consult qualified legal and security professionals before implementing this policy. Montague Law is a Florida-based law firm focused on corporate, M&A, venture capital, and technology transactions.