Hello @Stancu Print
Thank you for reaching out to Microsoft Q&A and I'm happy to provide answer to your inquiry.
This is a critical concern and from what I know, Microsoft already patched the vulnerability earlier this year and there was no information or evidence that is showing any data was compromised or leaked to the public. Also, your uploaded image for cartoon to Copilot is secured since you also deleted each prompt after use, that is really thoughtful of you for that will also add an extra layer of security. And if you're still not sure about Copilot Security feature you can refer to this topic Data, Privacy and Security for Microsoft 365 Copilot. In case you want a better security service for your product, you can also upgrade to Microsoft Copilot Pro or subscribe to others AI product based on your preference. I hope my response will give you more insight about Copilot feature and security.
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Haytham - MSFT | Microsoft Q&A Support Specialist.