Urgent: Unauthorized Gemini 2.5 Pro API Charges – Seeking Assistance and Refund

Gemini API
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Hello Google AI Developers Team,

I am urgently seeking assistance regarding unauthorized Gemini 2.5 Pro API charges that appeared on my billing account within the past 24-48 hours (September 19th). This is particularly concerning as my applications are exclusively configured to use Gemini 2.5 Flash, and I have not initiated any Gemini 2.5 Pro requests since September 3rd.

Account Information

  • Firebase Project: alphaness-322423
  • Billing Account ID: 01568C-0C9EFD-5525C0
  • Project ID: alphaness-322423

Issue Summary

  • Problem: Unauthorized Gemini 2.5 Pro API usage charges
  • Timeline: Past 24-48 hours (September 19th)
  • Expected Usage: Only Gemini 2.5 Flash (no Pro usage since September 3rd)

Unauthorized SKU IDs

The following SKU IDs show usage that I did not initiate:

  1. 0F51-429B-C2DC
  2. 2D1C-F790-3C09
  3. 1FD9-C71B-4D32

Security Measures Implemented

To secure my account, I have immediately:

  • Disabled the API
  • Regenerated all API keys
  • Deleted previous API keys
  • Applied stricter API key restrictions
  • Verified application configurations (confirmed no Pro usage)

Assistance Requested

  1. Technical Investigation: Please help identify how these unauthorized API calls occurred and investigate potential security vulnerabilities
  2. Billing Review: Request review and refund for unauthorized Gemini 2.5 Pro charges
  3. Security Guidance: Recommendations to prevent future unauthorized access

Concern Level

This situation suggests one of the following scenarios:

  • Potential security breach or unauthorized access
  • API billing system error
  • Vulnerability in account infrastructure

I would greatly appreciate your prompt technical investigation and guidance. Please let me know what additional information or logs you require to resolve this matter.

Thank you for your urgent attention to this security and billing concern.

Best regards,
Giulio Leone

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UPDATE: Situation Has Significantly Escalated

Hello Google AI Developers Team and Community,

I need to provide an urgent update on my previous post regarding unauthorized Gemini 2.5 Pro API charges.

Current Situation: The unauthorized charges have dramatically escalated from the initial €18 to €346 over just 4 days. This represents a severe and ongoing billing issue that continues to impact my account despite the security measures I implemented.

Actions Taken:

  • I have opened a case with Google Cloud Billing Support
  • Currently in queue waiting for human operator assistance
  • Following official dispute procedures through the appropriate forms
  • However, I have not yet received any refund or resolution

Urgent Request: I desperately need assistance from official Google staff and the community to:

  1. Immediately stop any further unauthorized charges from accumulating
  2. Secure a full refund for all unauthorized Gemini 2.5 Pro usage
  3. Identify the root cause to prevent this from happening to other developers

Google Support Reference: Ticket #63227067

The rapid escalation of these charges is extremely concerning and suggests either a serious security vulnerability or a critical billing system error. I would be grateful for any guidance from the community or immediate intervention from Google staff.

Thank you for your urgent attention to this matter.

Best regards,
Giulio Leone