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A significant security flaw has been discovered within the Microsoft Events platform, which could have allowed attackers to access the personal information of users from two separate databases: the event registration list and the waitlist. The vulnerability, uncovered by a 15-year-old bug bounty hunter known as Faav, exposed sensitive user data, including full names, email […] The post Microsoft Events Vulnerability Exposes Users Personal Data From Registration And Waitlist Databases appeared first on Cyber Security News.
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A significant Microsoft 365 outage blocked user access to several critical services, including Microsoft Teams, Exchange Online, and the Microsoft 365 admin center. The incident began late on Wednesday, October 8, 2025, leaving organizations worldwide unable to utilize essential communication and administrative platforms. Microsoft acknowledged the issue promptly and began investigating the widespread reports from […] The post Microsoft 365 Outage Blocks Access to Teams, Exchange Online, and Admin Center – Updated appeared first on Cyber Security News.
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Microsoft is urging organizations to harden Microsoft Teams as threat actors increasingly abuse its built-in collaboration features chat, meetings, voice/video, screen sharing, and app integrations to gain initial access, persist, move laterally, and e…
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The U.S. Cybersecurity and Infrastructure Security Agency (CISA) warned of active exploitation of a critical privilege escalation vulnerability in Microsoft Windows. Known as CVE-2021-43226, this flaw resides in the Common Log File System (CLFS) driver…
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Microsoft Defender for Endpoint users, particularly those with Dell devices, are experiencing a widespread issue with false Basic Input/Output System (BIOS) security alerts due to a critical software bug. The problem, which surfaced on October 2, 2025,…
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Microsoft is updating its security policies to require administrator consent for new third-party applications seeking access to Exchange and Teams content. These “Secure by Default” changes, set to roll out from late October to late November 2025, aim to enhance tenant security by giving administrators greater control over data access. This update is a key […] The post Microsoft to Launch New Secure Default Settings for Exchange and Teams APIs appeared first on Cyber Security News.
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Microsoft is currently investigating a significant bug affecting classic Outlook for Windows that prevents users from accessing their email accounts. The issue manifests as a persistent error message stating “Cannot start Microsoft Outlook. Canno…
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Google has unveiled a groundbreaking AI-powered ransomware detection system for its Drive desktop application, representing a significant advancement in cybersecurity protection for organizations worldwide. This innovative feature automatically halts f…
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Organizations face an ever-evolving cyberthreat landscape marked by faster, more complex attacks. Today, Microsoft is answering this call with the general availability of an agentic security platform built on Microsoft Sentinel. This new wave…
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Cybersecurity researchers have identified a sophisticated campaign where threat actors are using malicious advertisements and search engine optimization poisoning to distribute fake Microsoft Teams installers containing the Oyster backdoor malware. The…
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