Introduction
Every day, your organization sends and receives information emails, reports, customer data, contracts, and more. But every time data moves, it’s exposed to potential risk: interception, tampering, or accidental leakage.
That’s why ISO 27001 Control 5.43 Information Transfer exists. It ensures all transfers internal or external happen securely, with clear policies, safeguards, and accountability.
Because protecting data in motion is just as important as protecting it at rest.
Why This Control Matters
Information transfer happens everywhere not just through IT systems, but through people and processes too. Think:
- Sending client files via email
- Sharing reports with partners
- Uploading documents to cloud platforms
- Exchanging data through APIs or removable media
If these processes aren’t controlled, one careless transfer can lead to data exposure or regulatory violations.
Control 5.43, from ISO/IEC 27002:2022 Section 5.43, is an Organizational control that’s both preventive and detective in nature. It supports Confidentiality and Integrity through the Protect and Monitor cybersecurity concepts.
What This Control Involves
Establish a Transfer Policy
Define how information can be shared, with whom, and under what conditions.
Use Secure Channels
Encrypt data in transit for example using TLS, VPN, or secure file transfer tools.
Classify Before Sending
Ensure sensitive data is properly labeled and handled according to its classification level.
Implement Authentication and Access Controls
Verify sender and recipient identities before sharing sensitive files.
Monitor and Log Transfers
Keep audit trails for key data exchanges and detect unauthorized transfers.
Address Non-Digital Transfers
Include physical records, removable drives, and printed materials in your policy scope.
Common Pitfalls
- 🚫 Sending unencrypted data over email or messaging apps
- 🚫 Sharing sensitive files via public links or unverified recipients
- 🚫 Lack of tracking or logging for external transfers
- 🚫 Ignoring data exchange with third-party APIs and SaaS platforms
Canadian Cyber’s Take
At Canadian Cyber, we help organizations secure their communication pipelines from email encryption and secure file-transfer setups to API protection and data governance policies.
We believe security should be seamless users should protect information without friction. That’s why we implement practical, automated controls across Microsoft 365, Azure, and other cloud ecosystems to make secure transfer the default, not an afterthought.
🚀 Takeaway
Every time data leaves your environment, it carries your organization’s reputation with it.
ISO 27001 Control 5.43 ensures information moves securely encrypted, monitored, and managed responsibly.
Because data in motion should never mean data at risk.
How Canadian Cyber Can Help
At Canadian Cyber, we provide:
- Secure File Transfer and Encryption Implementation
- Email Security and DLP Configuration (Microsoft 365 / Azure)
- Information Transfer Policies and ISO 27001 Consulting
👉 Ready to make secure data sharing second nature?
Book a free consultation here.
