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MSRC

2024

Mitigating NTLM Relay Attacks by Default

Monday, December 09, 2024

Introduction In February 2024, we released an update to Exchange Server which contained a security improvement referenced by CVE-2024-21410 that enabled Extended Protection for Authentication (EPA) by default for new and existing installs of Exchange 2019. While we’re currently unaware of any active threat campaigns involving NTLM relaying attacks against Exchange, we have observed threat actors exploiting this vector in the past.

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Announcing the Adaptive Prompt Injection Challenge (LLMail-Inject)

Friday, December 06, 2024

We are excited to introduce LLMail-Inject, a new challenge focused on evaluating state-of-the-art prompt injection defenses in a realistic simulated LLM-integrated email client. In this challenge, participants assume the role of an attacker who sends an email to a user. The user then queries the LLMail service with a question (e.

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Securing AI and Cloud with the Zero Day Quest

Tuesday, November 19, 2024

Our security teams work around the clock to help protect every person and organization on the planet from security threats. We also know that security is a team sport, and that’s why we also partner with the global security community through our bug bounty programs to proactively identify and mitigate potential issues before our customers are impacted.

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Toward greater transparency: Publishing machine-readable CSAF files

Tuesday, November 12, 2024

Welcome to the third installment in our series on transparency at the Microsoft Security Response Center (MSRC). In this ongoing discussion, we talk about our commitment to providing comprehensive vulnerability information to our customers. At MSRC, our mission is to protect our customers, communities, and Microsoft, from current and emerging threats to security and privacy.

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