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Microsoft Defender bug triggers erroneous BIOS update alerts

ID: a7087c5e-b004-5ef7-a72d-74f4e6fe7a16

STIX ID: report--a7087c5e-b004-5ef7-a72d-74f4e6fe7a16

Feed Name: Bleeping Computer

Date Published: 2025-10-02

Date Updated: 2026-07-18

Author: Sergiu Gatlan

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Microsoft has acknowledged a logic bug in Defender for Endpoint that causes some Dell devices' BIOS firmware to be incorrectly reported as outdated and is preparing a fix; the article also notes other recent Microsoft fixes addressing macOS black-screen crashes and several anti-spam/false-positive issues in Exchange Online and Teams.

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