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868 result(s) for "Microsoft 365" — best match first.

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The security stories that matter, explained by our team — with the concrete steps to take.

Latest headlines from security outlets

Collected every two hours from specialised publications — each link leads to the original article.

The Hacker News
The Hacker News Vulnerabilities
Microsoft Says New Cybersecurity AI Model Helps MDASH Hit 95.95% at Half the Cost

Microsoft has launched its first cybersecurity-specific model inside MDASH, its multi-model vulnerability identification and remediation harness.The company sa…

The Hacker News
The Hacker News Vulnerabilities
Microsoft Says New Cybersecurity AI Model Helps MDASH Score 95.95% at Half the Cost

Microsoft has launched its first cybersecurity-specific model inside MDASH, its multi-model vulnerability identification and remediation harness.The company sa…

Latest Hacking News | Cyber Security News, Hacking Tools and Penetration Testing Courses
Latest Hacking News | Cyber Security News, Hacking Tools and Penetration Testing Courses Vulnerabilities
Azure DevOps MCP Flaw: How to Lock Down Your AI Review Agent Before Microsoft Patches It

A practical checklist for the Azure DevOps MCP flaw that lets hidden PR comments hijack AI coding agents, plus the configuration changes to make right now.Azur…

Azure

The Hacker News
The Hacker News
Microsoft Removes 119 Edge Extensions That Hid Malware in Images and Fonts

Microsoft has shut down a long-running malicious extension operation on the Edge Add-ons store that hid its payloads inside ordinary image and font files, then…

The Hacker News
The Hacker News
Microsoft Details Windows Clipper Malware Campaign Using USB LNK Worm and Tor-Based C2

Microsoft has disclosed details of a Windows-based cryptocurrency clipper campaign codenamed CryptoBandits that has targeted users since February 2026 with cli…

Windows

The Hacker News
The Hacker News
Fake Microsoft Alerts Used to Deploy North Korean NarwhalRAT Malware

The North Korean state-sponsored hacking group known as ScarCruft (aka APT37) has been observed using spear-phishing messages impersonating Microsoft Account s…

The Hacker News
The Hacker News
Microsoft Fixes One-Click GitHub Dev Attack That Let Attackers Steal OAuth Tokens

Cybersecurity researchers have disclosed a one-click attack via Microsoft Visual Studio Code (VS Code) that makes it possible to steal a user's GitHub token."J…

GitHub

The Hacker News
The Hacker News Breaches & leaks
Microsoft Takes Down Malware-Signing Service Behind Ransomware Attacks

Microsoft on Tuesday said it disrupted a malware-signing-as-a-service (MSaaS) operation that weaponized the company's Artifact Signing system to deliver malici…

The Hacker News
The Hacker News Vulnerabilities
Microsoft Patches 138 Vulnerabilities, Including DNS and Netlogon RCE Flaws

Microsoft on Tuesday released patches for 138 security vulnerabilities spanning its product portfolio, although none of them have been listed as publicly known…

The Hacker News
The Hacker News Breaches & leaks
MuddyWater Uses Microsoft Teams to Steal Credentials in False Flag Ransomware Attack

The Iranian state-sponsored hacking group known as MuddyWater (aka Mango Sandstorm, Seedworm, and Static Kitten) has been attributed to a ransomware attack in …

The Hacker News
The Hacker News Vulnerabilities
Microsoft Issues Patches for SharePoint Zero-Day and 168 Other New Vulnerabilities

Microsoft on Tuesday released updates to address a record 169 security flaws across its product portfolio, including one vulnerability that has been actively e…

Microsoft 365

The Hacker News
The Hacker News Alerts
Microsoft Warns of WhatsApp-Delivered VBS Malware Hijacking Windows via UAC Bypass

Microsoft is calling attention to a new campaign that has leveraged WhatsApp messages to distribute malicious Visual Basic Script (VBS) files.The activity, beg…

Windows

The Hacker News
The Hacker News Alerts
Microsoft Warns IRS Phishing Hits 29,000 Users, Deploys RMM Malware

Microsoft has warned of fresh campaigns that are capitalizing on the upcoming tax season in the U.S. to harvest credentials and deliver malware.The email campa…

The Hacker News
The Hacker News Alerts
Microsoft Warns OAuth Redirect Abuse Delivers Malware to Government Targets

Microsoft on Monday warned of phishing campaigns that employ phishing emails and OAuth URL redirection mechanisms to bypass conventional phishing defenses impl…

The Hacker News
The Hacker News
Microsoft Discloses DNS-Based ClickFix Attack Using Nslookup for Malware Staging

Microsoft has disclosed details of a new version of the ClickFix social engineering tactic in which the attackers trick unsuspecting users into running command…

Windows

The Hacker News
The Hacker News Vulnerabilities
Microsoft Patches 59 Vulnerabilities Including Six Actively Exploited Zero-Days

Microsoft on Tuesday released security updates to address a set of 59 flaws across its software, including six vulnerabilities that it said have been exploited…

The Hacker News
The Hacker News Vulnerabilities
APT28 Uses Microsoft Office CVE-2026-21509 in Espionage-Focused Malware Attacks

The Russia-linked state-sponsored threat actor known as APT28 (aka UAC-0001) has been attributed to attacks exploiting a newly disclosed security flaw in Micro…

LinuxSecurity - Security Advisories
LinuxSecurity - Security Advisories Vulnerabilities
Fedora 43: duc Critical Fix for Stack Overflow CVE-2025-13654

Update to 1.4.6: fixes CVE-2025-13654

Linux

The Hacker News
The Hacker News Vulnerabilities
Microsoft Issues Security Fixes for 56 Flaws, Including Active Exploit and Two Zero-Days

Microsoft closed out 2025 with patches for 56 security flaws in various products across the Windows platform, including one vulnerability that has been activel…

Windows

The Hacker News
The Hacker News
Silver Fox Uses Fake Microsoft Teams Installer to Spread ValleyRAT Malware in China

The threat actor known as Silver Fox has been spotted orchestrating a false flag operation to mimic a Russian threat group in attacks targeting organizations i…

LinuxSecurity - Security Advisories
LinuxSecurity - Security Advisories Vulnerabilities
Debian LTS: Unbound CVE-2025-11411 Important DDoS Risk Fix DLA-4365-2

Yuxiao Wu, Yunyi Zhang, Baojun Liu and Haixin Duan discovered that the initial fix for CVE-2025-11411 as applied in DLA 4365-1 did not fully fix the vulnerabil…

Linux

The Hacker News
The Hacker News
Microsoft Mitigates Record 5.72 Tbps DDoS Attack Driven by AISURU Botnet

Microsoft on Monday disclosed that it automatically detected and neutralized a distributed denial-of-service (DDoS) attack targeting a single endpoint in Austr…

The Hacker News
The Hacker News
Microsoft Mitigates Record 15.72 Tbps DDoS Attack Driven by AISURU Botnet

Microsoft on Monday disclosed that it automatically detected and neutralized a distributed denial-of-service (DDoS) attack targeting a single endpoint in Austr…

The Hacker News
The Hacker News Vulnerabilities
Microsoft Fixes 63 Security Flaws, Including a Windows Kernel Zero-Day Under Active Attack

Microsoft on Tuesday released patches for 63 new security vulnerabilities identified in its software, including one that has come under active exploitation in …

Windows