Why Does an Organization Need a Logging System?

A logging system is a mechanism that records who, when, and what action was taken within a specific information system.

For example, a log can show which employee accessed customer data, modified a record, downloaded a document, or deleted information.

In terms of personal data protection, logging is one of the most critical security measures. It helps an organization control access to data and, if necessary, determine whether unauthorized or unlawful activity has occurred.

Why Is Logging Important?

A logging system helps an organization to:

• Identify who had access to personal data;

• Detect suspicious or unauthorized activities;

• Investigate data security incidents;

• Prove that access to data is controlled;

• Enhance accountability among employees.

For instance, if there is a suspicion in the organization that a specific customer's data was viewed unlawfully, establishing this without logging would be extremely difficult.

What Information Should Be Stored in Logs?

It is good practice for logs to capture:

• The identifier of the user or employee;

• The time and date of the action;

• The action performed — viewing, modifying, deleting, downloading;

• The system or category of data affected by the action;

• IP address or other technical information, if necessary.

However, logs should not store more information than is necessary for the specified purpose. For example, the purpose of logging is not to excessively monitor an employee's detailed activity or to create duplicate copies of customer data.

Logs Are Also Personal Data

It is important to remember that logs themselves may contain personal data. For example, an employee's name, system login time, IP address, or history of actions.

Therefore, access to logs must also be restricted. They should not be accessible to all employees. Logs should only be viewed by individuals who have a genuine business need — such as IT security, compliance, or internal audit functions.

How Long Should Logs Be Stored?

The retention period for logs must be determined in advance. The organization needs to assess how long logs are required for security, incident investigation, or legal defense purposes.

Retaining logs indefinitely simply because "we might need them someday" is not a correct approach.

Practical Recommendation

An organization should establish a logging policy: which systems are logged, what data is stored, who has access, how long logs are retained, and under what circumstances they are reviewed.

A logging system is not merely a technical issue. It is a critical component of data protection, information security, and organizational accountability.

A well-implemented logging system helps an organization not only react to incidents after the fact but also mitigate risks proactively.

Author:
Davit Karashvili
Data Protection Expert

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