Communications Security Policy Writers
What are Communications Security Policies?
Communications security policies set out how organisations protect the confidentiality, integrity and availability of data shared through internal and external communication channels.
These policies help ensure that sensitive information is transmitted securely, systems are protected from interception or tampering, and employees use communication tools responsibly.
What Do Communications Security Policies Cover?
A communications security policy typically includes:
-
Approved communication platforms for email, messaging and file transfers
-
Encryption and secure transfer protocols for sensitive data
-
Protection against phishing, spoofing and social engineering attacks
-
Use of business email for official communications only
-
Controls for external communications and sharing of confidential data
-
Monitoring and logging of communications where lawful
-
Links to IT security, acceptable use and data protection policies
A clear policy helps reduce the risk of data leaks, unauthorised access or reputational damage resulting from poorly managed communications.
It also supports compliance with security standards such as ISO 27001 and data protection laws by demonstrating how communication channels are secured and managed.
Communications security is especially important in hybrid working environments, where employees may be using a mix of devices and networks to send and receive information.
By establishing clear expectations and technical safeguards, organisations can build trust with clients, partners and regulators while supporting a culture of secure and professional communication.
Standards and Legal Anchors
Communications security covers email, instant messaging, voice, video, and file transfer.
It sits across UK GDPR Article 32, ISO 27001:2022 controls 5.14 (information transfer), 8.20 (network security), and 8.24 (secure electronic messaging), Cyber Essentials (which scopes email and remote access), and PECR 2003 for marketing communications.
Common Compliance Pitfalls
- Email DMARC, SPF and DKIM not enforced (NCSC Mail Check is the public-sector standard).
- End-to-end encrypted messaging used for business records that should be retained.
- File transfer to external counterparts via consumer email or ad-hoc links.
- Voice and video call content not covered by retention policy.
- Out-of-office messages disclosing more than necessary about absence and alternative contact.
What Policy Pros Delivers
Our Communications Security Policy package includes the main policy, an email security configuration baseline (DMARC, SPF, DKIM), an instant-messaging procedure with retention rules, a secure file-transfer procedure, a voice and video procedure, and an out-of-office content guideline.
Frequently Asked Questions
Do we need DMARC, SPF and DKIM?
Yes. NCSC Mail Check is the public-sector standard and most enterprise buyers now ask for evidence of DMARC enforcement (p=reject) as part of their supplier security assessment. Cyber Essentials does not mandate DMARC at the strictest level but expects email security to be addressed.
Can we use end-to-end encrypted messaging for business?
Yes for transient communication. For business records that must be retained (contracts, decisions, regulator-relevant exchanges), end-to-end encrypted messaging is unsuitable because messages cannot be archived. The policy should specify which channels are approved for which message types.
How should we handle file transfer to external counterparties?
Use a managed secure-transfer service or an approved cloud sharing platform with link expiry, access logging and recipient authentication. Avoid email attachments containing personal data, and avoid consumer file-sharing services.
