Google Ads MCC Takeover Attacks Are Rising—How Phishing Scams Are Targeting Manager Accounts

Verizon‘s Data Breach Investigations Report states that human elements, such as social engineering and phishing, are now the most common reason for security breaches. In many cases, the hacker does not break in; rather, the hacker is granted access to an account by the user.

This shift explains the rise in Google Ads scams. Criminals are not focused on servers anymore; they are targeting the real people managing advertising budgets. A manager account is a goldmine because one Google Ads MCC login can open the door to every linked client account.

Just one click on a phony email, or one second of trust, is all that it will take for an attacker to gain access to a single MCC. Once they have access to one MCC, they can do more than just steal data; they can use that MCC to run ads, drain the budget of the business, or lock that business out of their account.

Why Manager Accounts Are a Goldmine for Hackers

Google Ads has a manager account, also known as an MCC, that makes it easy for agencies and other businesses to manage multiple ad accounts from one dashboard.

This is great for advertisers.

However, it’s also a great place for hackers to profit from their criminal acts. If hackers can obtain access to an MCC advertising account, they can:

• Run scam or malicious ads
• Deplete the entire advertising budget
• Redirect users to a malicious website
• Suspend the account for violation of policy
• Harm the agency’s reputation with its clients

Instead of just hacking one account, they hack many accounts at once. This provides a very high ROI  for cybercriminals.

How Google Ads Phishing Scams Actually Work

Most Google Ads phishing scams rely on a very simple psychological trick: urgency.

A typical flow of the attacks is as follows:

• You receive an email that claims to be from Google Ads.
• The email states that there’s an account suspension and/or a billing issue.
• You then receive the email saying you should “log in right now.”
• When you click on the link to log in, you are taken to a fake login page.
• Your credentials will be captured.
• Hackers will log in to your real account using those credentials.

No technical hacking is required. The attack only uses social engineering techniques.

Common Phishing Email Examples

Phishing authorities commonly impersonate businesses, sending out phishing emails from fake email accounts, i.e., “[email protected]” or “[email protected].”

Types of phishing emails include those utilizing one or more of these subject lines:

• Your Google Ads Account May Be Disabled
• Invoices Need Your Attention
• Violating Policy
• Suspicious Activity Found

All phishing emails look authentic, and they use logos that appear real and have a formal-sounding tone. However, one little thing sets them apart from a legitimate email: the sender’s email address does not match who it’s supposed to be coming from.

What Happens After an MCC Takeover?

Once the crime is carried out, hacking criminals will frequently do the following:

• Post advertisements for cryptocurrency and investment scams
• Modify account permission settings
• Lock out the account’s original administrator
• Spend huge sums before being caught
• Resell access to the account via underground forums

This can create issues for the agency. Refund requests from clients, lost trust, and termination of contracts with the agency.

A single hack can undo all of the time and effort that a person spent building their reputation.

Why These Attacks Are Increasing

The following trends indicate that scammers are more likely to utilize Google Ads:

• The use of artificial intelligence in phishing.
• The spread of remote work is increasing the risk that your login credentials will be stolen.
• The average size of agency client portfolios (more agencies managing larger portfolios).
• Criminals will always follow the money; therefore, high advertising budgets = more scam activity.
• It all boils down to this: MCCs are lucrative for the criminal element.

How to Protect Your MCC Advertising Account

This section enlists the key tips in order to protect your MCC advertising account:

• Implement 2-Factor Authentication: Your account will have a second login requirement, meaning that even if your password is compromised through a Google Ad scam, the hacker cannot access your account.
• Limit Admin Access: By having fewer administrators on your AdWords MCC, there are fewer opportunities for abuse or takeover of your account.
• Audit Account Users Frequently: Remove users from your MCC access list that are either former employees or were not invited to be an administrator. 
• Educate Staff on Phishing Scams: Take the time to properly teach your team how to identify fake emails and phishing scams involving Google Ad accounts. 
• Use Bookmarks on Your Browser for Official Website Logins: Ensure that you only access Google Ads through the official website; do not visit a fake Google Ads login page. 
• Watch for Sudden Spikes in Advertiser Spend: Be alert for unusual advertising spend, as this may indicate that your advertiser’s account has been hacked. 
• Enable Login Alerts on Your Account: Set up login alerts to receive an email when someone logs in to your account using a new device or location. 

Final Thoughts

The human trust represents the greatest number of threats to your ad accounts, rather than a technical vulnerability. Agencies that will do well in 2026 will view cybersecurity as an added value for their clients, rather than an IT hygiene issue. It can cost more than just money to click carelessly through the online world of Google Ads scams; it can also cost you credibility.

Agencies that invest in continuous phishing-awareness training using platforms like Threatcop position cybersecurity as a client value-add, not just IT hygiene.