Search: “microsoft 365”

211 stories

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DomainAll Cyber AIWindow24h 3d 7d 30d AllIn the wild Important only Show duplicates

CategoryAll Vulnerability 334 Ransomware 276 Phishing & fraud 251 Malware 211 Data breach 172 Threat actor 163 Industry 140 Policy & legal 133 Exploit / PoC 112 AI industry 41 AI tools & infra 24 Advisory 22 Tools 17 AI safety & security 13

SeverityAll critical 726 high 445 medium 457 low 183 info 122

Cloudflare joins Microsoft 365 Networking Partner Program to optimize user connectivity

Help Net SecurityDec 12, 00:00 UTC · Dec 12, 2021Malware1

55

SVR Attacks on Microsoft 365

Schneier on SecurityJan 21, 12:31 UTC · Jan 21, 2021Malware1

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DTEX Systems extends scope and protection of Microsoft 365 E5 modules

Help Net SecurityMar 25, 00:00 UTC · Mar 25, 2022Malware1

30

Botnet looks for quiet ways to try stolen logins in Microsoft 365 environments

The RecordFeb 24, 20:05 UTC · Feb 24, 2025Malware1

55

HOLLOWGRAPH malware turns Microsoft 365 calendars into an espionage channel

Help Net SecurityJul 20, 00:00 UTC · Jul 20, 2026Malware1

42

Review: Hornetsecurity 365 Total Protection Enterprise Backup

Help Net SecurityMay 31, 13:58 UTC · May 31, 2022Malware

30

Russian hackers abuse hotel Wi-Fi networks to steal Microsoft 365 credentials and deploy malware

Help Net SecurityAug 4, 00:00 UTC · Aug 4, 2026Malware1

30

HollowGraph Malware Hides C2 and Stolen Files in Microsoft 365 Events Dated 2050

The Hacker NewsJul 20, 14:33 UTC · Jul 20, 2026Malware

42

New HollowGraph Malware Hijacks Microsoft 365 Calendars for Covert C2

Infosecurity MagazineJul 20, 12:30 UTC · Jul 20, 2026Malware1

42

Massive botnet hits Microsoft 365 accounts

Help Net SecurityApr 23, 13:41 UTC · Apr 23, 2026Malware1

55

Beware of video call links that are attempts to steal Microsoft 365 access, researchers tell NGOs

The RecordApr 22, 19:50 UTC · Apr 22, 2025Malware

42

Experts Detect Multi-Layer Redirect Tactic Used to Steal Microsoft 365 Login Credentials

The Hacker NewsAug 1, 06:51 UTC · Aug 1, 2025Malware

30

Chinese Botnet Bypasses MFA in Microsoft 365 Attacks

Infosecurity MagazineFeb 25, 12:00 UTC · Feb 25, 2025Malware1

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ACR Stealer Uses ClickFix Lures to Steal Browser Tokens and Microsoft 365 Files

The Hacker NewsJul 17, 08:56 UTC · Jul 17, 2026Malware1

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Microsoft confirms DDoS attacks against M365, Azure Portal

Help Net SecurityApr 17, 12:37 UTC · Apr 17, 2026Malware

30

Malwarebytes: SolarWinds Hackers Read Our Emails

Infosecurity MagazineJan 20, 11:35 UTC · Jan 20, 2021Malware1

42

Week in review: Infostealer dropped via FortiClient EMS flaw, exploited Trend Micro Apex One flaw

Help Net SecurityMay 31, 00:00 UTC · May 31, 2026Malware in the wildCVE-2026-45659 CVE-2026-34926 CVE-2026-35616

60

odix joins MISA program and integrates its FileWall with Microsoft Azure Sentinel

Help Net SecurityOct 1, 00:00 UTC · Oct 1, 2020Malware1

55

Midnight Blizzard Targets Travelers via Captive Portals

Infosecurity MagazineAug 3, 14:30 UTC · Aug 3, 2026Malware

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Cado Security enables organizations to investigate and respond to potential M365 threats

Help Net SecurityMar 14, 00:00 UTC · Mar 14, 2024Malware1

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odix FileWall: Enterprise-grade CDR malware protection for SMBs

Help Net SecuritySep 15, 00:00 UTC · Sep 15, 2020Malware

42

⚡ Weekly Recap: iPhone Spyware, Microsoft 0-Day, TokenBreak Hack, AI Data Leaks and More

The Hacker NewsOct 28, 08:29 UTC · Oct 28, 2025Malware in the wildCVE-2025-43200 CVE-2025-32711 CVE-2025-33053+24 CVEs2

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iboss adds new features to its Cloud Platform to give organizations more visibility and control

Help Net SecurityAug 18, 00:00 UTC · Aug 18, 2021Malware

30

Russian APT phished government employees via Microsoft Teams

Help Net SecurityAug 3, 00:00 UTC · Aug 3, 2023Malware

42

Russian hackers hijack hotel Wi-Fi networks to spy on travelers, Microsoft says

The RecordAug 3, 12:21 UTC · Aug 3, 2026Malware

30

⚡ Weekly Recap: VPN 0-Day, Encryption Backdoor, AI Malware, macOS Flaw, ATM Hack & More

The Hacker NewsAug 5, 04:38 UTC · Aug 5, 2025Malware in the wildCVE-2025-40596 CVE-2025-40597 CVE-2025-40598+8 CVEs

60

Espionage malware targeted telecoms in Middle East using Microsoft, Google, Dropbox tools

The RecordMar 28, 15:44 UTC · Mar 28, 2023Malware

42

A large botnet targets M365 accounts with password spraying attacks

Security AffairsFeb 24, 20:51 UTC · Feb 24, 2025Malware

30

Why are there so many malware-as-a

Cisco TalosJul 19, 12:00 UTC · Jul 19, 2023Malware

42

Kali365 Weaponizes Microsoft Authentication Against US Companies: New Enterprise Risk

The Hacker NewsAug 5, 11:43 UTC · Aug 5, 2026Malware1

55

'Jingle Thief' Hackers Exploit Cloud Infrastructure to Steal Millions in Gift Cards

The Hacker NewsOct 24, 16:01 UTC · Oct 24, 2025Malware

30

NCSC Launches Microsoft Office 365 Button to Report Business Email Spam

Infosecurity MagazineAug 12, 11:54 UTC · Aug 12, 2021Malware1

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Cloud-enabled threats are on the rise, sensitive data is moving between cloud apps

Help Net SecurityFeb 21, 00:00 UTC · Feb 21, 2020Malware

30

Cloudflare unveils several email security and data protection tools

Help Net SecurityJan 12, 00:00 UTC · Jan 12, 2023Malware

30

Attackers use Microsoft Teams as launchpad for malware

Help Net SecurityMay 18, 08:43 UTC · May 18, 2023Malware

30

Tricky Phish Angles for Persistence, Not Passwords

Krebs on SecurityJan 7, 21:58 UTC · Jan 7, 2020Malware

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Week in review: Actively exploited Windows SMB flaw, trusted OAuth apps turned into cloud backdoors

Help Net SecurityOct 26, 00:00 UTC · Oct 26, 2025Malware in the wildCVE-2025-59287 CVE-2025-61932 CVE-2025-54236+2 CVEs

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Fidelis,Mimecast,Palo Alto Networks,Qualys impacted by SolarWinds hack

Security AffairsJan 26, 22:35 UTC · Jan 26, 2021Malware

42

U.S. Government Agencies' Emails Compromised in China

The Hacker NewsJul 15, 00:00 UTC · Jul 15, 2023Malware

42

Facebook and Microsoft remain prime targets for spoofing

Help Net SecurityJul 14, 00:00 UTC · Jul 14, 2023Malware1

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