Since late 2023, Microsoft has observed an increase in reports of attacks focusing on internet-exposed, poorly secured operational technology (OT) devices. Internet-exposed OT equipment in water and wastewater systems (WWS) in the US were targeted in multiple attacks over the past months by different nation-backed actors, including attacks by IRGC-affiliated...

Multicloud computing has become the foundation for digital businesses, with 86% of organizations having already adopted a multicloud approach.1 However, for all its benefits around increased agility, flexibility, and choice, we also see unique challenges with multicloud—including the need to manage security, identity, and compliance across different...

Microsoft has identified a new North Korean threat actor, now tracked as Moonstone Sleet (formerly Storm-1789), that uses both a combination of many tried-and-true techniques used by other North Korean threat actors and unique attack methodologies to target companies for its financial and cyberespionage objectives. Moonstone Sleet is observed to set...

In the ever-evolving landscape of cyberthreats, staying ahead of malicious actors is a constant challenge. Microsoft Threat Intelligence has observed that gift cards are attractive targets for fraud and social engineering practices. Unlike credit or debit cards, there’s no customer name or bank account attached to them, which can lessen scrutiny...

Ahead of the Microsoft Build 2024 conference, we announced a new class of Windows computers, Copilot+ PC. Alongside this exciting new class of PCs, we are introducing important security features and updates that make Windows 11 more secure for users and organizations and give developers the tools to prioritize security. Today’s threat landscape...

Since mid-April 2024, Microsoft Threat Intelligence has observed the threat actor Storm-1811 misusing the client management tool Quick Assist to target users in social engineering attacks. Storm-1811 is a financially motivated cybercriminal group known to deploy Black Basta ransomware. The observed activity begins with impersonation through voice phishing...