Microsoft 365 Security
The latest Microsoft 365 Security coverage — news, analysis, and updates from the WindowsNews.AI desk.
Exchange Online to Block TLS 1.0/1.1 for POP and IMAP by July 2026
Microsoft has set July 2026 as the final cutoff for Exchange Online POP3 and IMAP4 clients that still negotiate Transport Layer Security (TLS) versions 1.0 or 1.1. After that date, every connection...
Bonfy ACS 2.0 Targets Copilot Security Gaps with Agent-First Approach
Bonfy has launched Adaptive Content Security 2.0, positioning it as a critical solution for enterprises grappling with AI security challenges in Microsoft 365 environments. The release comes as...
Outlook Encryption Broken: Microsoft Confirms 2511 Update Blocks Encrypt-Only Emails
Microsoft has confirmed that a recent Current Channel update to Classic Outlook (Version 2511, Build 19426.20218) introduced a critical regression that prevents recipients from opening messages...
Baseline Security Mode unifies identity, file, and device protections in one opt-in setting
Microsoft has introduced Baseline Security Mode for Microsoft 365, a comprehensive \"secure-by-default\" posture that represents a significant shift in how organizations approach cloud security. This...
Maester Tool: Automating Microsoft 365 Security Testing with Configuration as Code
Microsoft 365 administrators face a constant challenge: ensuring security configurations remain intact across complex cloud environments where settings can change unexpectedly. Traditional manual...
Microsoft Teams to Block Executables, Scan URLs in Real Time with New Defender Integration
Microsoft Teams will soon automatically block executable and other high-risk file types in chats and channels, while also scanning shared URLs at the moment of click to warn or prevent access to...
Sophos Central Gets First MDR-Optimized Backup for Microsoft 365
Sophos and Rubrik have combined forces to deliver the industry’s first managed detection and response (MDR)-optimized backup and recovery service nested entirely within a unified security...
The Phishing Pipeline: How Attackers Weaponize Microsoft 365 Direct Send to Evade Every Defense
Microsoft 365’s Direct Send feature has become a double-edged sword. Designed to let printers, scanners, and applications relay mail without a dedicated mailbox, it now enables attackers to slip...
Rubrik and Sophos Embed Backup into MDR for Unbreakable Microsoft 365 Recovery
Rubrik and Sophos are fusing data recovery with managed detection and response in a new integrated solution that promises to rewrite the rules of cyber resilience for Microsoft 365. The partnership...
Rubrik and Sophos Debut First MDR-Optimized Backup and Recovery for Microsoft 365
Sophos and Rubrik have jointly announced a strategic partnership to deliver the industry’s first Managed Detection and Response (MDR)-optimized backup and recovery solution for Microsoft 365,...
Sophos and Rubrik Launch MDR-Optimized Microsoft 365 Backup with Immutable Air-Gapped Recovery
In an era where data breaches and cyberattacks have become persistent and evolving threats, organizations are prioritizing resilience, continuity, and security for their critical digital assets. The...
Sophos and Rubrik Unite to Revolutionize Microsoft 365 Backup and Recovery
As organizations increasingly rely on Microsoft 365 as the backbone of modern business collaboration and productivity, the challenge of securing this complex, cloud-first environment has grown...