An encryption gap is unprotected data that should have been encrypted but was not. In cloud environments, these gaps often arise from inconsistent configuration, incomplete rollout, or exceptions that outgrow their original purpose. They matter because encryption remains one of the core controls for limiting exposure of sensitive records.
Expanded Definition
An encryption gap is not simply “missing encryption.” It is a point where policy, architecture, or implementation failed to apply encryption to data that the organisation expected to protect. In cloud and hybrid estates, these gaps commonly appear in storage services, backups, snapshots, messaging paths, logs, or temporary copies that escape the original control design. The concept is practical rather than theoretical: it reflects a control failure state, not a data classification label.
Definitions vary across vendors, especially when the gap is created by an exception, a legacy dependency, or a service that encrypts by default only in certain modes. For NHI Management Group, the key distinction is whether the exposure is due to absent encryption, weak enforcement, or incomplete coverage across the data lifecycle. That makes the term relevant to governance, risk, and technical assurance work. The most common misapplication is treating “encryption enabled” as proof of complete coverage, which occurs when teams verify a control at the service level but not across all data paths and replicas.
Examples and Use Cases
Implementing encryption rigorously often introduces operational complexity, requiring organisations to weigh stronger confidentiality against configuration overhead, key management effort, and the risk of service exceptions.
- A cloud database is encrypted at rest, but exported analytics files land in object storage without encryption, creating a gap outside the database control plane.
- Backup jobs copy sensitive records to a secondary region, yet the destination bucket is not covered by the same encryption policy.
- A SaaS application encrypts production data, but diagnostic logs and temporary cache files remain unencrypted because they were exempted during rollout.
- A migration from legacy infrastructure leaves a subset of volumes unencrypted because the cutover plan prioritised availability over full policy enforcement.
- Security teams compare coverage against control expectations in the NIST Cybersecurity Framework 2.0 and discover that documented encryption policy does not match actual data handling paths.
Why It Matters for Security Teams
Encryption gaps matter because they create silent exposure: the organisation may believe it has protected data while sensitive records remain readable to anyone with access to the underlying storage, backup, or log location. That undermines confidentiality, complicates incident response, and weakens assurances made to customers, regulators, and internal stakeholders. In practice, these gaps often emerge alongside cloud sprawl, fast-moving application delivery, or poorly governed exceptions, where control ownership is unclear and evidence of enforcement is fragmented.
For security teams, the issue is not only technical but also procedural. Encryption must be verified across the full data lifecycle, including transient copies, replication targets, and service integrations. That maps closely to governance expectations in the NIST Cybersecurity Framework 2.0 and, where identity-controlled access to data stores is part of the risk picture, to access and privilege discipline as well. Organisations typically encounter the consequence only after a breach review, an audit challenge, or a failed assurance test, at which point the encryption gap becomes operationally unavoidable to address.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
NIST CSF 2.0, NIST SP 800-53 Rev 5 and NIST SP 800-63 set the technical controls, while ISO/IEC 27001:2022 and DORA define the regulatory obligations.
| Framework | Control / Reference | Relevance |
|---|---|---|
| NIST CSF 2.0 | PR.DS-1 | The framework expects data to be protected at rest and in transit. |
| NIST SP 800-53 Rev 5 | SC-28 | SC-28 addresses protection of information at rest, which frames encryption gaps. |
| ISO/IEC 27001:2022 | A.8.24 | ISO 27001 includes information protection through cryptography and key management. |
| NIST SP 800-63 | Identity assurance depends on protecting records that support authentication and recovery. | |
| DORA | DORA requires ICT risk management and resilience, which includes data protection weaknesses. |
Apply storage protection controls and confirm all sensitive repositories inherit encryption enforcement.
Related resources from NHI Mgmt Group
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Reviewed and updated by the NHIMG editorial team on August 24, 2026.
NHI Mgmt Group — the #1 independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org
