Microsoft launches solution to protect email from Mail bombing

The latest Office 365 update automatically filters email attacks without user setup and is rolling out this month.

Microsoft is rolling out a new update to Microsoft Defender for Office 365 that aims to protect accounts from Email bombing. Email bombing is the targeted attack on your email account using spam or phishing emails.

This new Mail Bombing detection feature will automatically detect and filter these attacks directly into the Spam folder in your email. You don't need to do anything because this feature is enabled by default. Microsoft currently plans to roll out this feature in July.

Email bombing occurs when an attacker sends thousands of emails into your inbox. The real goal is to hide important emails or create confusion between real and fake email accounts so you fall for a scam, like a fake IT support call. Microsoft's new filtering tool provides a layer of protection to stop these email attacks before they start.

Jessica Tanner

Update 06 July 2025