Thank you for bringing this to our attention in the Community space, @SmallChurchUser221. I will share additional information on how to ensure the security of your QuickBooks Online (QBO) account against unauthorized access.
You can modify the information in your company file to ensure others can't access your company data. Moreover, consider implementing extra verification methods to provide another layer of protection when accessing the account. For more information, please refer to this page: Secure your Intuit Account and prevent lockout with extra verification methods.
Additionally, I recommend checking this page for more tips on how to keep your account secured and prevent suspicious activities:
For any questions about the program or QuickBooks' confidentiality measures, please leave a comment below. I'm here to help you anytime. Keep safe.