What breaks when ad manager accounts are treated as low-risk marketing access?

Why This Matters for Security Teams

ad manager account often look like routine marketing access until a token, session, or delegated permission turns them into an entry point for the rest of the enterprise. The risk is not just ad spend abuse. It is the downstream reach into Workspace, billing, cloud consoles, and connected SaaS that frequently sits outside the marketing team’s mental model. That is why NHI governance guidance and the OWASP Non-Human Identity Top 10 both treat identity sprawl and privilege mapping as first-order concerns.

NHIMG research shows how common this pattern becomes once non-human or delegated identities are left unchecked: 97% of NHIs carry excessive privileges, and only 5.7% of organisations have full visibility into their service accounts, according to Ultimate Guide to NHIs. That is the same failure pattern seen with ad manager access when teams assume “marketing” equals “low risk.” In practice, many security teams encounter platform-wide exposure only after a phishing or consent abuse event has already reached billing or identity-adjacent systems.

How It Works in Practice

The operational mistake is to classify ad manager accounts by business function instead of by effective privilege. A marketer may only intend to create campaigns, but the account can inherit access to ad platforms, reporting APIs, shared drives, payment profiles, and SSO-linked applications. Once a session is stolen, the attacker does not need to remain inside the ad console. They can pivot through trusted integrations and use the account’s legitimate entitlements to discover adjacent systems.

Security teams should map these accounts as privileged identities and inventory every downstream dependency they can reach. That means identifying:

• Direct platform permissions, including admin, billing, and user-management rights.
• Connected SaaS and Workspace ties created through SSO, OAuth consent, or delegated admin roles.
• Secrets, recovery paths, and session tokens that outlive the user’s normal campaign work.
• Whether access is reviewed as a marketing entitlement or as a privileged identity requiring tighter control.

Current guidance from the NIST Cybersecurity Framework 2.0 supports this kind of asset and access visibility, while NHIMG’s Top 10 NHI Issues highlights why unmanaged privilege and weak lifecycle controls keep showing up as breach multipliers. The practical response is to apply least privilege, separate billing and admin functions where possible, require step-up authentication for sensitive actions, and review OAuth grants and delegated access on a recurring schedule. These controls tend to break down when marketing teams share super-admins across agencies, because shared credentials and broad SaaS delegation erase accountability.

Common Variations and Edge Cases

Tighter control over ad manager accounts often increases operational overhead, requiring organisations to balance campaign agility against account isolation and review burden. That tradeoff is real, especially when agencies, franchise groups, or regional teams need rapid access changes during launches or incident response.

There is no universal standard for this yet, but current guidance suggests treating externally managed ad access as higher risk than its business label implies. A contractor account with temporary campaign rights may still inherit payment controls, audience exports, or the ability to invite additional users. Likewise, a single sign-on outage can force emergency access paths that bypass normal approval workflows, which is why break-glass procedures should be documented and monitored.

In mature environments, security teams separate read-only reporting from campaign administration, keep billing under finance or platform owners, and force time-bound approvals for elevated access. They also correlate ad platform identity logs with SaaS sign-in activity to detect lateral movement. The Ultimate Guide to NHIs — Key Challenges and Risks and 52 NHI Breaches Analysis both reinforce the same lesson: once identity boundaries blur, compromise spreads far beyond the original use case.

Related resources from NHI Mgmt Group

• Why do compromised ad accounts create more risk than simple ad fraud?
• How should security teams reduce the risk of Google Ad Manager account takeover?
• Why do non-human identities create more risk than many human accounts?
• Why do non-human identities create more remediation risk than many human accounts?