Valeo · security governance / February 2026

The macro-security warning was really an architectural signal

A macro security problem looked like user inconvenience at first, but it exposed how much operational behaviour depended on executable code embedded in an Office document.

2 min read
Valeo · security governance
macrosecurityautomationExcel

Situation

Security restrictions around macros meant some automations no longer ran as they had before. The easiest response would have been to find a way to enable everything again. In a security-governance context, that is the wrong instinct: when the platform becomes stricter, first understand what it is blocking and why.

Approach

Instead of bypassing the control, I separated automation that was genuinely required from code that had simply remained there historically. We identified tasks that could move into simpler, more auditable processes and the places where a macro still had a justified role. Execution requirements were documented so a local Office setting did not remain a hidden dependency.

Outcome

The process became less dependent on the Office security state of one particular machine. Not every macro disappeared, but the boundary around critical behaviour became clearer: what is code, what is data, what is permission, and where a security policy is intentionally supposed to stop execution.