Use of cryptography
Rules for the effective use of cryptography, including cryptographic key management, should be defined and implemented.
Purpose
To ensure proper and effective use of cryptography to protect confidentiality, authenticity and integrity of information.
Implementation Guidance
Define cryptography policy and standards
Use strong, approved cryptographic algorithms
Implement encryption for data at rest and in transit
Establish key management procedures
Use TLS for network communications
Recommended Tools
Cloudflare
Global CDN with WAF and DDoS protection. Essential security layer for web applications.
Google Workspace
Complete suite including email, calendar, and SSO capabilities. Ideal for startups already using Gmail.
Microsoft 365
Enterprise productivity suite with strong security features and Azure AD integration.
ISO 27001 Services from the Directory
These providers can help you implement A.8.24 and achieve ISO 27001 certification.
360 Advanced
US CPA and compliance assessment firm for SOC 1/2, ISO 27001, HITRUST, HIPAA, and PCI with hands-on mid-market delivery.

6clicks
Cyber GRC platform with a strong US presence for risk, compliance, and third-party assessments.
A-LIGN
High-volume multi-framework audit firm for SOC 2, ISO 27001, HITRUST, FedRAMP, CMMC, and PCI, with dual ANAB/UKAS ISO pathways.
AdaptiveGRC
Polish GRC software platform for integrated risk, compliance, audit, and information security management including ISO 27001 programs.

Advisera
Provider of ISO 27001 documentation, training, and consultancy services to help businesses achieve compliance.

AENOR
Leading Spanish certification body for ISO 27001, ENS (Spanish National Security Scheme), and multi-standard management systems.
Related Controls
Other controls in Technological Controls
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