Managing security settings and protections in Outlook on the web for business
Hi Kayla,
If you're receiving multiple emails that appear to come from a business owner or executive and are requesting sensitive information, this is very likely a Business Email Compromise (BEC) or impersonation/phishing attack.
First, please warn all employees immediately
Send an organization-wide alert advising users:
- Do not reply to the emails.
- Do not click links or open attachments.
- Do not provide credentials, financial information, employee data, gift card purchases, wire transfers, or other sensitive information.
- Report any similar messages to IT/Security.
For end user, please follow this guidance: Protect yourself from phishing | Microsoft Support
Then contact your IT admin and ask them to consult:
Anti-phishing protection - Microsoft Defender for Office 365 | Microsoft Learn
Configure anti-phishing policies for all cloud mailboxes - Microsoft Defender for Office 365 | Micr…
However, if you want a live session and a more direct help to ensure a clean protection, the most effective next step is ask your IT admin to use their admin credentials to submit a support request through the Microsoft 365 Admin Center .
Microsoft also provides customer service phone numbers based on your region. IT admin can find the appropriate contact number here: Customer service phone numbers - Microsoft Support
This route ensures that a Microsoft support engineer can initiate a remote session to investigate backend configurations, run advanced diagnostic tools, and, if necessary, they can request to escalate the case to specialized teams with access to internal systems and logs. These backend resources are essential for resolving issues that go beyond what’s visible in the user interface.
I hope this helps you resolve the issue quickly. I’m glad to assist and truly hope the information provided has been useful. Please feel free to reach out anytime if you need further assistance.
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