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Mozilla releases Thunderbird 153 with native Microsoft Exchange support

📅 23 July 2026 at 13:06 UTC📰 Cyber InsiderView original source ↗
Mozilla releases Thunderbird 153 with native Microsoft Exchange support

Thunderbird 153 “Meadow” has been released, introducing native Microsoft Exchange support alongside a redesigned account setup experience, user interface improvements, and security fixes. The update marks the first time Exchange accounts can be configured directly in Thunderbird without relying on third-party add-ons. Mozilla describes Thunderbird 153 as the culmination of the features and refinements introduced … The post Mozilla releases Thunderbird 153 with native Microsoft Exchange support appeared first on CyberInsider.

🤖 AI BriefingAuto-generated threat analysis
🔍Threat Overview

Mozilla released Thunderbird 153, introducing native Microsoft Exchange support and addressing dozens of vulnerabilities, marking a significant improvement in email client security and user experience.

⚙️Technical Details
Affected Systems
WindowsmacOSLinux
Attack Vectors
Exchange Web Services (EWS)Microsoft Graph
💥Impact Assessment
Severity: high
Who Is at Risk
Individuals and organizations using Thunderbird email client, particularly those with Microsoft Exchange email servers.
🛡️Recommended Actions
1Update to Thunderbird 153 immediately
2Disable scripts when reading messages to mitigate browser engine flaws
3Monitor for phishing attempts using native operating system notifications
📦Affected Products
Software:Thunderbird

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