Owner or finance leader
When this matters
Impersonation, payment requests, or account concerns create business risk, but the response still depends on whoever notices first.
What changes
Suspicious activity has a defined reporting, investigation, and escalation path connected to the people who can make the business decision.
IT or Microsoft 365 administrator
When this matters
Configuration work and account investigations compete with onboarding, support, and the rest of the tenant workload.
What changes
QuantM can own the agreed email-security scope or provide specialist investigation and follow-through beside your administration team.
Operations or compliance owner
When this matters
Employees do not know where to report suspicious messages, and evidence from previous events is inconsistent.
What changes
Reporting expectations, escalation contacts, findings, and service reviews become part of one documented operating process.