Google MCCs Are Getting Hacked: Here Is What You Need To Know

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Last week, two agency owners (with a combined revenue over 20M+) told me their Google MCC got hacked.

Both run established agencies. Both just had their Google MCC breached — the master portal that controls every client ad account.

If you run paid media, you're a target. Not "might be." You are.

Agency #1 had real security. Strong passwords. 2FA on every account. Rolling one-time passcodes. Dual admin authentication.

Didn't matter.

Attackers got into their MCC and injected thousands of phishing campaigns across their client accounts. Click fraud. Overspend. All running on their clients' cards.

Then it got worse.

Google's fraud systems caught the phishing ads and suspended every account linked to the MCC. Every client. All advertising. Dark. Overnight.

The suspension did more damage than the hack. Google nuked the entire book of business to contain the breach.

Agency #2 got hit two ways in a few weeks:

• MCC breached — 10s of thousands in damages and counting. Client ads paused for almost a month.

• Website hacked. Attackers injected a fake "I'm not a robot" checkbox that tricks visitors into running malicious code. The website hack is how they discovered the breach at all.

Both owners told me the same thing: their clients wanted a finger to point. 

The agency is a victim. The clients are victims. Even Google is a victim. 

These agencies are at serious churn risk across their entire portfolio.

I put together 5 things you should do to prevent this from happening in your agency. This is a MUST do today/tomorrow. These hacks are happening in waves. Its not a coincidence two VERY serious agency owners told me about their hack in the same week.

Five things to do this week:

1. Unlink every dormant account from your MCC. 

When Google pulls the trigger, the blast radius was every linked account. Old clients, paused accounts, test accounts — every link is a client who goes dark. Prune ruthlessly.

2. Move your admins to hardware keys. 

One agency had 2FA and rolling codes and still got breached. 

Codes can be phished. A hardware key costs about $50, and phishing kits can't fake the physical tap. 

Every admin gets one. No exceptions.

3. Cut your admin count. 

Dual admin authentication didn't save them, because admins are the target. 

Most of your team needs standard access, not admin. Fewer admins, smaller attack surface.

4. Set tripwires on campaign creation. 

Thousands of campaigns went live silently. 

Automated rules that flag new campaigns. 

Budget alerts on every account. 

A daily anomaly check. You want to know in hours — not when Google suspends you.

Don’t have someone in house that can build the daily anomaly check?

Book a call here & we can discuss what it looks like for us to set that up for you.

5. Treat your website as an attack surface. 

The second agency found their breach through a hacked website. If a "verify you're human" checkbox ever asks you to copy, paste, or run anything — that's malware, not a CAPTCHA. Update your plugins, lock down your website admin, and put the same hardware-key rule on your hosting accounts.

Security used to be an IT problem. Now it's a client retention problem.

One breach and your entire book of business goes dark while you explain to 30 clients why their ads stopped.

Don't wait for the call I got twice this week.

Begin fixing this now.

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