Microsoft 365 Security
The latest Microsoft 365 Security coverage — news, analysis, and updates from the WindowsNews.AI desk.
New Microsoft 365 SMTP Relay Exploit Bypasses DKIM—8-Step Defense Guide
Microsoft 365 has become the backbone of enterprise communication, but its security isn't foolproof—especially when it comes to direct send email phishing attacks. These sophisticated threats...
Microsoft 365 Direct Send Abuse: How to Protect Against Phishing Attacks
Microsoft 365's Direct Send feature, designed to simplify internal email routing, has become an unexpected security vulnerability. Recent research reveals how threat actors exploit this legitimate...
Microsoft 365 Direct Send Phishing: How to Protect Your Business Now
Microsoft 365's Direct Send feature, designed to simplify email delivery for applications and devices, has become an unwitting accomplice in sophisticated phishing campaigns. Security researchers...
Microsoft 365 Direct Send Security Risks: Enterprise Protection Strategies
Microsoft 365's Direct Send feature has become an unexpected weak point in enterprise email security, with attackers increasingly exploiting this SMTP relay capability to bypass traditional defenses....
Microsoft 365 Direct Send Phishing: How to Protect Your Organization Now
A sophisticated phishing campaign exploiting Microsoft 365's Direct Send feature has compromised over 70 organizations across multiple sectors in the U.S. since May 2025. This attack vector bypasses...
Inforcer's Copenhagen Expansion: Revolutionizing Nordic Cloud Security with AI-Driven Solutions
UK-based cloud security innovator Inforcer has chosen Copenhagen as the location for its Nordic headquarters, signaling a major strategic push into one of Europe's most dynamic tech regions. This...
Hornetsecurity's AI Cyber Assistant Revolutionizes Microsoft 365 Security with Advanced Threat Detection
Hornetsecurity has unveiled its groundbreaking AI Cyber Assistant, a cutting-edge addition to its 365 Total Protection Plan 4 for Microsoft 365, marking a significant leap forward in cloud security....
Hornetsecurity's AI-Powered Microsoft 365 Security Suite: A Game-Changer for Cybersecurity
As digital transformation accelerates, businesses face an unprecedented wave of sophisticated cyber threats, particularly within the Microsoft 365 ecosystem. Hornetsecurity's newly unveiled...
Password Spraying Attacks: How UNK_SneakyStrike Exploits Legitimate Tools
Password spraying attacks have evolved into one of the most insidious threats in cybersecurity, leveraging legitimate tools to bypass traditional defenses. A recent incident, dubbed UNK_SneakyStrike,...
How Cybercriminals Exploit TeamFiltration for Office 365 Attacks: Detection & Prevention
Cybercriminals are increasingly leveraging TeamFiltration, a legitimate penetration testing tool, to launch large-scale attacks against Office 365 accounts. This sophisticated campaign highlights how...
June 2025 fixes 78 bugs, 5 zero-days exploited in MSHTML, SharePoint, Azure AD attacks
Every IT administrator and Windows enthusiast marks the second Tuesday of each month with both anticipation and anxiety: Patch Tuesday remains a critical milestone in maintaining system security and...
EchoLeak: How a Zero-Click AI Exploit Is Forcing Microsoft Copilot Security Overhaul
A newly discovered zero-click vulnerability in Microsoft Copilot has exposed critical weaknesses in enterprise AI security frameworks, forcing organizations to rethink how they deploy conversational...