TL;DR
An Encryption Policy defines how data is protected when it’s stored and transmitted across your systems. It ensures sensitive information is unreadable to unauthorized users and is a core requirement for many compliance frameworks. This guide walks you through creating a policy that balances usability with security.
What Is an Encryption Policy?
This policy outlines when and how your business applies encryption to sensitive data—whether at rest (stored) or in transit (sent across networks). It defines required encryption standards, key management processes, and roles and responsibilities.
It ensures your information remains secure even if intercepted, stolen, or misplaced.
Why Your SMB Needs an Encryption Policy
Without one, your business risks:
- Data breaches exposing customer or financial data
- Non-compliance fines (GDPR, HIPAA, PIPEDA, PCI-DSS)
- Credential leaks or unauthorized access
- Loss of trust from clients and partners
Encryption isn’t just for banks or governments—it’s essential protection for any modern business.
What to Include in an Encryption Policy
Scope and Applicability
Specify:
- What types of data must be encrypted (e.g., PII, credentials, payment info)
- Systems and platforms in scope (e.g., email, cloud storage, laptops)
Encryption Standards
Set minimum encryption requirements:
- AES-256 for data at rest
- TLS 1.2 or 1.3 for data in transit
- RSA 2048 or higher for digital signatures
Key Management
Include:
- Who can generate and access encryption keys
- Key rotation schedules
- Secure key storage (e.g., HSMs, key vaults)
Endpoint Encryption
Require:
- Full disk encryption for all company-owned laptops and mobile devices
- Device PIN/password policies
Cloud and Third-Party Tools
Ensure:
- Cloud providers use encryption aligned with your standards
- SaaS vendors disclose their encryption practices
Exceptions and Legacy Systems
Explain:
- When encryption may not be feasible
- How compensating controls (e.g., segmentation) are applied
Roles and Responsibilities
Assign:
- Data owners to classify and protect data
- IT/security to enforce and audit encryption practices
Step-by-Step: How to Create Your Own Encryption Policy
1. Identify Sensitive Data
Begin by clearly defining what “sensitive” means in your organization. Not all data requires the same level of protection. Your encryption policy should specify which categories of information must be encrypted and why.
For example, HR files containing Social Insurance Numbers (SIN), payroll data, or health information must be encrypted both at rest and in transit. Customer records that include credit card numbers, billing addresses, or login credentials also require encryption to reduce exposure in the event of a breach. Even internal board reports, pricing strategies, or acquisition discussions may warrant encryption due to competitive sensitivity.
A practical way to approach this is to classify data into tiers such as:
- Confidential (PII, financial data, legal records) – encryption mandatory
- Internal (operational reports, internal communications) – encryption recommended
- Public (marketing materials, press releases) – encryption optional
This classification becomes the backbone of your enforcement strategy.
2. Select Encryption Methods
Once you’ve identified what needs protection, define how that protection will occur. Your policy should name the approved encryption standards and tools your organization supports.
Common best practices include:
- AES-256 for data at rest (file servers, databases, laptops)
- TLS 1.2 or 1.3 for data in transit (web traffic, APIs, email)
- Full-disk encryption for corporate laptops and mobile devices
- Encrypted backups stored in secure or immutable repositories
If you operate in a regulated industry (healthcare, finance, education), reference the applicable frameworks such as PIPEDA, HIPAA, or SOC 2. The goal is not simply to “use encryption,” but to define which cryptographic standards are acceptable and prohibit outdated or weak algorithms.
Avoid vague language like “industry standard encryption.” Name the standards explicitly.
3. Define Enforcement Rules
Encryption policies fail when they are aspirational rather than enforceable. Your document should clearly outline where encryption is required, how it is deployed, and who monitors compliance.
You can structure these rules in a simple governance format:
- All company-issued laptops must have full-disk encryption enabled prior to deployment.
- All databases containing confidential data must enforce encryption at rest.
- All external-facing web applications must use valid TLS certificates.
- Email systems transmitting sensitive attachments must use encrypted delivery methods.
Additionally, assign responsibility. For example:
- IT Operations verifies device encryption during onboarding.
- Security reviews TLS configurations quarterly.
- Backup administrators confirm encrypted storage configurations monthly.
Enforcement means measurable control, not intention.
4. Build a Key Management Plan
Encryption is only as strong as your key management practices. If encryption keys are poorly handled, your security posture collapses.
Your policy should define:
- How encryption keys are generated (e.g., using approved cryptographic libraries)
- Where keys are stored (hardware security modules, secure key vaults)
- How often keys are rotated
- Who has access to key management systems
- How keys are retired or destroyed
This is important because lost or exposed keys effectively negate encryption. For example, storing database encryption keys in a plain text configuration file on the same server defeats the purpose entirely.
A disciplined key rotation schedule (eg. annually or upon personnel changes) reduces long-term exposure risk and aligns with most compliance frameworks.
5. Review Cloud and SaaS Providers
Modern businesses rely heavily on cloud platforms and SaaS tools. Your encryption policy must extend beyond your internal infrastructure.
Here’s how to validate vendor encryption practices:
- Request documentation on encryption at rest and in transit.
- Confirm supported encryption standards (e.g., AES-256, TLS 1.2+).
- Review SOC 2 or ISO 27001 reports.
- Verify how customer data is isolated in multi-tenant environments.
- Confirm backup encryption and key management processes.
Do this quarterly – not just one time during onboarding. Vendors update infrastructure, change hosting providers, or introduce new features. Your review cadence ensures your risk posture evolves alongside theirs.
Your policy should explicitly state that any vendor failing to meet encryption standards must implement remediation plans or be reconsidered.
6. Communicate and Train
An encryption policy is ineffective if employees unknowingly circumvent it.
Training should explain:
- Why encrypted storage is required
- Why sensitive files cannot be stored on personal devices
- How to verify secure website connections (HTTPS)
- How to securely share files externally
Make encryption awareness part of your Joiner process so new employees understand secure data handling from day one. During onboarding:
- Confirm their device encryption is enabled.
- Review safe file-sharing practices.
- Require acknowledgment of the encryption policy.
Reinforce training annually and after major system changes. Encryption is not only a technical control — it is a behavioral control.
Frequently Asked Questions
Is full disk encryption required?
Yes. It protects data on lost/stolen laptops and should be mandatory.
Do we need encryption if we have strong passwords?
Yes. Encryption ensures data remains unreadable even if accessed.
What if some tools don’t support encryption?
Use alternatives or document the risk and implement additional controls.
Common Mistakes to Avoid
- Relying solely on password protection
- Using outdated encryption algorithms (e.g., MD5, TLS 1.0)
- Storing keys in the same location as encrypted data
- Assuming cloud vendors encrypt everything by default
Lock It Down, Keep It Safe
Encryption is your final line of defense. A strong policy ensures that even when systems are compromised, your data stays secure.
Need an Encryption Policy for Your Small Business? Not a problem. We have a template you can get here.