# BSI C5:2020 OIS-05 — Contact with Relevant Government Agencies and Interest Groups - Source: https://support.icompaas.com/compliance/bsi-c5-2020/ois-05-contact-with-relevant-government-agencies-and-interest-groups - Section: [Compliance](https://support.icompaas.com/compliance) › [BSI C5:2020 (Cloud Computing Compliance Criteria)](https://support.icompaas.com/compliance/bsi-c5-2020) › Information Security Governance (OIS) - Last updated: 2026-06-05 - Publisher: iCompaas, Inc. (https://www.icompaas.com) **BSI C5:2020**·Criterion `OIS-05`·medium·Component: **Information Security Governance** ## What this control requires > Engages with authorities and interest groups to stay informed on threats and vulnerabilities, integrating this information into OIS-06 risk management and OPS-19 vulnerability handling processes to enhance CSP's proactive security posture and protect cloud customer data effectively. > > — BSI C5:2020, Criterion OIS-05 ### In plain English Engages with authorities and interest groups to stay informed on threats and vulnerabilities, integrating this information into OIS-06 risk management and OPS-19 vulnerability handling processes to enhance CSP's proactive security posture and protect cloud customer data effectively. In practice, this means you can prove you information management policy-level controls on a defined cadence. ## Why it matters BSI C5 is the default cloud-security baseline German public-sector buyers and many DAX-listed enterprises expect; gaps here directly block procurement in the DACH region and frequently appear as must-have items in EU public-tender documents. ## What an auditor looks for A C5 attesting auditor (under ISAE 3000 / IDW PS 860) tests both the design and — for a Type 2 — the operating effectiveness over the attestation period. For each criterion they look for both the Basic and any in-scope Additional objectives. Within **Information Security Governance**, the assessor will trace your implementation back to the catalogue reference (Criterion OIS-05) and look for objective evidence on the latest two assessment cycles. ## How to implement #### Cloud Posture **CSPM.** Run Wiz / Prisma / Defender for Cloud / Security Command Center over every account; auto-ticket findings above your accepted-risk threshold. #### Vulnerability Management **Scanners.** Pair an unauthenticated scanner (Nessus / Qualys / Tenable.io) for external surface with an authenticated agent for OS/library CVEs on every host. **SLA.** Document remediation SLAs by CVSS / EPSS: critical 7 days, high 30 days, medium 90 days; report monthly trend to leadership. **Containers.** Scan images in CI (Trivy / Grype / Snyk Container) AND at runtime; block deploys on critical findings without exception. #### Policy Management **Docs.** Keep each policy in version-controlled Markdown alongside the code that implements it; ship a signed PDF snapshot at each annual review and link the SHA into the SoA. ### Operational checklist - **Information.** Document the trigger, the owner and the cadence. - **Contact.** Document the trigger, the owner and the cadence. - **Risk.** Document the trigger, the owner and the cadence. - **Security.** Document the trigger, the owner and the cadence. - **Data.** Document the trigger, the owner and the cadence. - **Scope:** management policy, cloud customer data. ## Evidence to collect - **Policy Document.** A signed and version-controlled policy / standard / procedure document. Signed policy or standard documents the safeguard. Focus: Contact with Relevant Government Agencies and Interest Groups. ## Common pitfalls - Treating CSPM findings as a backlog instead of a hot queue: findings older than the policy SLA accumulate until the auditor asks why. - Scans that hit only the perimeter; missing authenticated scans of OS, runtime libs and base images so most CVEs are invisible. - Policies that no engineer has read; the version in Confluence drifts from the version that's actually being enforced. ## How it maps to other frameworks Computed from shared tags, control component and key-operation subjects — handy when you are reconciling controls across an audit. - [**ISO/IEC 27001:2022 A.8.8** — Management of technical vulnerabilities](https://support.icompaas.com/compliance/iso-27001-2022/a-8-8-management-of-technical-vulnerabilities) - [**HIPAA (45 CFR Part 164) 164.308(a)(5)(i)** — Security Awareness and Training](https://support.icompaas.com/compliance/hipaa/164-308-a-5-i-security-awareness-and-training) - [**SOC 2 (2017 TSC) CC3.1** — Objective Setting](https://support.icompaas.com/compliance/soc-2-trust-services-criteria/cc3-1-objective-setting) - [**NIST SP 800-171 Rev. 3 3.12.1** — Security Assessment](https://support.icompaas.com/compliance/nist-sp-800-171-rev-3/3-12-1-security-assessment) - [**NIST SP 800-53 Rev. 5 AC-4(5)** — Embedded Data Types](https://support.icompaas.com/compliance/nist-sp-800-53-rev-5/ac-4-5-embedded-data-types) ## Related controls in BSI C5:2020 - [**Criterion OIS-06** — Risk Management Policy](https://support.icompaas.com/compliance/bsi-c5-2020/ois-06-risk-management-policy) - [**Criterion SP-03** — Exceptions from Existing Policies and Instructions](https://support.icompaas.com/compliance/bsi-c5-2020/sp-03-exceptions-from-existing-policies-and-instructions) - [**Criterion OPS-18** — Managing Vulnerabilities, Malfunctions and Errors - Concept](https://support.icompaas.com/compliance/bsi-c5-2020/ops-18-managing-vulnerabilities-malfunctions-and-errors-concept) - [**Criterion HR-02** — Employment terms and conditions](https://support.icompaas.com/compliance/bsi-c5-2020/hr-02-employment-terms-and-conditions) - [**Criterion PI-01** — Documentation and safety of input and output interfaces](https://support.icompaas.com/compliance/bsi-c5-2020/pi-01-documentation-and-safety-of-input-and-output-interfaces) - [**Criterion COM-01** — Identification of applicable legal, regulatory, self-imposed or contractual requirements](https://support.icompaas.com/compliance/bsi-c5-2020/com-01-identification-of-applicable-legal-regulatory-self-imposed-or-contractual) ## References - [Bundesamt für Sicherheit in der Informationstechnik (BSI) — BSI C5:2020](https://www.bsi.bund.de/EN/Topics/CloudComputing/Compliance_Criteria_Catalogue/Compliance_Criteria_Catalogue_node.html) - Catalogue identifier: `Criterion OIS-05` Topics: governance riskcloud posturevulnerability managementpolicy management ## Related compliance guidance - [SOC 2 compliance: a practical implementation guide for cloud-native SaaS teams](https://support.icompaas.com/compliance/soc-2-trust-services-criteria): Configuration checks like this one are the technical half of a SOC 2 / ISO 27001 programme — the guide shows where they fit, what else an auditor expects, and how to evidence them. - [ISO/IEC 27001:2022 compliance: a practical implementation guide](https://support.icompaas.com/compliance/iso-27001-2022): ISO 27001 Annex A.8 (technological controls) is where cloud hardening evidence lands; the guide shows how to run the ISMS around it.