Microsoft Defender

Microsoft Defender helps prevent, detect, and respond to attacks across devices, identities, apps, email, data, workloads, and clouds. Explore threat intelligence, capabilities, and real-world guidance to help you get more out of Defender.

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Secure and verify every identity with Microsoft Entra

Microsoft Entra expands beyond identity and access management with new product categories such as cloud infrastructure entitlement management (CIEM) and decentralized identity.

Learn more
July 6, 2023

4 min read

Microsoft Defender for Endpoint is ranked number one in market share in the IDC Worldwide Corporate Endpoint Security Market Shares report, 2022

Today, we are proud to share that Microsoft is ranked number one in market share in the IDC Worldwide Corporate Endpoint Security Market Shares report, 2022.
July 5, 2023

6 min read

11 best practices for securing data in cloud services

This blog explores the importance and best practices for securing data in the cloud.
June 28, 2023

6 min read

How automation is evolving SecOps—and the real cost of cybercrime

ramsac Founder and Managing Director Rob May shares insights on how automation can support SecOps and how to protect against phishing attacks.
June 26, 2023

7 min read

Why endpoint management is key to securing an AI-powered future

With the coming wave of AI, this is precisely the time for organizations to prepare for the future.
Prevent threats with Microsoft Defender

The Microsoft Defender family offers comprehensive threat prevention, detection, and response capabilities for everyone—from individuals looking to protect their family to the world’s largest enterprises.

Explore products
June 22, 2023

11 min read

IoT devices and Linux-based systems targeted by OpenSSH trojan campaign

Microsoft has uncovered an attack leveraging custom and open-source tools to target internet-facing IoT devices and Linux-based systems.
June 14, 2023

5 min read

Expanding horizons—Microsoft Security’s continued commitment to multicloud

Learn how to manage multicloud security risk with Microsoft’s native multicloud protection for three of the industry’s main cloud platforms.
June 14, 2023

13 min read

Cadet Blizzard emerges as a novel and distinct Russian threat actor

Microsoft attributes several campaigns to a distinct Russian state-sponsored threat actor tracked as Cadet Blizzard (DEV-0586), including the WhisperGate destructive attack, Ukrainian website defacements, and the hack-and-leak front “Free Civilian”.
June 13, 2023

7 min read

How Microsoft and Sonrai integrate to eliminate attack paths

Cloud development challenges conventional thinking about risk.
Retain Microsoft Security Experts

Microsoft Security Experts are now available to strengthen your team with managed security services. Learn how to defend against threats with security experts.

Get started
June 12, 2023

3 min read

Forrester names Microsoft a Leader in the 2023 Enterprise Email Security Wave

Microsoft Defender for Office 365 is recognized as a Leader in Forrester’s 2023 Enterprise Email Security Wave Report.
June 8, 2023

12 min read

Detecting and mitigating a multi-stage AiTM phishing and BEC campaign

Microsoft Defender Experts observed a multi-stage adversary-in-the-middle (AiTM) and business email compromise (BEC) attack targeting banking and financial services organizations over two days.
May 30, 2023

10 min read

New macOS vulnerability, Migraine, could bypass System Integrity Protection

A new vulnerability, which we refer to as “Migraine”, could allow an attacker with root access to bypass System Integrity Protection (SIP) in macOS and perform arbitrary operations on a device.
May 24, 2023

10 min read

Volt Typhoon targets US critical infrastructure with living-off-the-land techniques

Chinese state-sponsored actor Volt Typhoon is using stealthy techniques to target US critical infrastructure, conduct espionage, and dwell in compromised environments.