Lightning is a technology platform tracked across 2 threat clusters and 1 intelligence report mention on ThreatCluster. First observed November 20, 2025; most recent activity November 20, 2025.
Lightning is the calendar and task management component used within the Mozilla Thunderbird ecosystem (historically as a separate add-on). In cybersecurity terms, calendar integrations can be a surface for phishing, scheduling-based lures, and data exposure, so changes to how calendars synchronize and integrate can affect threat surfaces. The recent Thunderbird update implying native Exchange support could alter Lightning's role by embedding calendar functionality more tightly into Thunderbird, potentially reducing reliance on external connectors and associated risks.
Thunderbird has released version 145, which includes native support for Microsoft Exchange email through the Exchange Web Services (EWS) protocol. This update eliminates the need for third-party add-ons, allowing for…
Thunderbird 145 has been released, providing full native support for Microsoft Exchange email via the Exchange Web Services (EWS) protocol. This update allows users in Microsoft Exchange environments to access their…