Which combination best secures historian data stores used for operational analytics?

Which combination best secures historian data stores used for operational analytics?

• A. Restrict access by role
• B. Encrypt data at rest
• C. All of the above
• D. Implement integrity checks

Answer: (C)

protecting historian data stores for operational analytics relies on layering protections that cover who can access the data, how the data is stored, and whether the data remains trustworthy. Limiting access by role enforces least privilege, so only those who truly need to work with the data can reach it. Encrypting data at rest means that if someone gains access to the storage medium itself, the data stays unreadable without the proper keys. Implementing integrity checks gives you a way to detect any unauthorized changes or corruption in the data, which is crucial for analytics that depend on reliable time-series information. When these controls are combined, you get defense in depth: access control reduces exposure, encryption protects confidentiality, and integrity checks protect data integrity and detect tampering. Individually each control helps, but together they provide the strongest protection for historian data stores.

protecting historian data stores for operational analytics relies on layering protections that cover who can access the data, how the data is stored, and whether the data remains trustworthy. Limiting access by role enforces least privilege, so only those who truly need to work with the data can reach it. Encrypting data at rest means that if someone gains access to the storage medium itself, the data stays unreadable without the proper keys. Implementing integrity checks gives you a way to detect any unauthorized changes or corruption in the data, which is crucial for analytics that depend on reliable time-series information. When these controls are combined, you get defense in depth: access control reduces exposure, encryption protects confidentiality, and integrity checks protect data integrity and detect tampering. Individually each control helps, but together they provide the strongest protection for historian data stores.