Cyberattacker techniques, tools, and infrastructure

Cyberattackers constantly evolve their techniques, tools, and infrastructure to launch increasingly complex attacks. Learn about the latest tactics and how to detect, disrupt, and defend against them.

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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.

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October 25, 2023

17 min read

Octo Tempest crosses boundaries to facilitate extortion, encryption, and destruction

Microsoft has been tracking activity related to the financially motivated threat actor Octo Tempest, whose evolving campaigns represent a growing concern for many organizations across multiple industries.
October 18, 2023

10 min read

Multiple North Korean threat actors exploiting the TeamCity CVE-2023-42793 vulnerability

Since early October 2023, Microsoft has observed North Korean nation-state threat actors Diamond Sleet and Onyx Sleet exploiting the Jet Brains TeamCity CVE-2023-42793 remote-code execution vulnerability.
October 11, 2023

10 min read

Automatic disruption of human-operated attacks through containment of compromised user accounts

User containment is a unique and innovative defense mechanism that stops human-operated attacks in their tracks.
September 14, 2023

10 min read

Peach Sandstorm password spray campaigns enable intelligence collection at high-value targets

Since February 2023, Microsoft has observed a high volume of password spray attacks attributed to Peach Sandstorm, an Iranian nation-state group.
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.

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September 12, 2023

8 min read

Malware distributor Storm-0324 facilitates ransomware access

The threat actor that Microsoft tracks as Storm-0324 is a financially motivated group known to gain initial access using email-based initial infection vectors and then hand off access to compromised networks to other threat actors.
August 24, 2023

13 min read

Flax Typhoon using legitimate software to quietly access Taiwanese organizations

China-based actor Flax Typhoon is exploiting known vulnerabilities for public-facing servers, legitimate VPN software, and open-source malware to gain access to Taiwanese organizations, but not taking further action.
August 2, 2023

6 min read

Midnight Blizzard conducts targeted social engineering over Microsoft Teams

Microsoft Threat Intelligence has identified highly targeted social engineering attacks using credential theft phishing lures sent as Microsoft Teams chats by the threat actor that Microsoft tracks as Midnight Blizzard (previously tracked as NOBELIUM).
July 25, 2023

13 min read

Cryptojacking: Understanding and defending against cloud compute resource abuse

Cloud cryptojacking, a type of cyberattack that uses computing power to mine cryptocurrency, could result in financial loss to targeted organizations due to the compute fees that can be incurred from the abuse.
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.

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July 14, 2023

10 min read

Analysis of Storm-0558 techniques for unauthorized email access

Analysis of the techniques used by the threat actor tracked as Storm-0558 (now tracked as Antique Typhoon) for obtaining unauthorized access to email data, tools, and unique infrastructure characteristics.
July 11, 2023

7 min read

Storm-0978 attacks reveal financial and espionage motives

Microsoft has identified a phishing campaign conducted by the threat actor tracked as Storm-0978 targeting defense and government entities in Europe and North America.
July 6, 2023

17 min read

The five-day job: A BlackByte ransomware intrusion case study

In a recent investigation by Microsoft Incident Response of a BlackByte 2.
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.