1381 matches found
Announcing the winners of the Adaptive Prompt Injection Challenge (LLMail-Inject)
We are excited to announce the winners of LLMail-Inject, our first Adaptive Prompt Injection Challenge! The challenge ran from December 2024 until February 2025 and was featured as one of the four official competitions of the 3rd IEEE Conference on Secure and Trustworthy Machine Learning IEEE...
BlueHat 2023: Applications to Attend NOW OPEN!
We are excited to announce that applications to attend BlueHat 2023 are now open! BlueHat 2023 will be the 20th version of the BlueHat conference and will once again be on the Microsoft campus in Redmond, WA, USA, from February 8 – 9, 2023. Hosted by the Microsoft Security Response Center MSRC,...
What’s the smallest variety of CHERI?
The Portmeirion project is a collaboration between Microsoft Research Cambridge, Microsoft Security Response Center, and Azure Silicon Engineering & Solutions. Over the past year, we have been exploring how to scale the key ideas from CHERI down to tiny cores on the scale of the cheapest...
Exploring a New Class of Kernel Exploit Primitive
The security landscape is dynamic, changing often and as a result, attack surfaces evolve. MSRC receives a wide variety of cases spanning different products, bug types and exploit primitives. One particularly interesting primitive we see is an arbitrary kernel pointer read. These often happen whe...
Recognizing Security Researchers in 2020
Is it too early to talk about the 2020 MSRC Most Valuable Security Researchers? Five months from now, at the end of June, the program period closes for researchers to be considered for inclusion in the Most Valuable Researchers list. The top researcher list will be revealed at Black Hat North...
Assessing risk for the May 2014 security updates
Today we released eight security bulletins addressing 13 unique CVE’s. Two bulletins have a maximum severity rating of Critical while the other six have a maximum severity rating of Important. The table is designed to help you prioritize the deployment of updates appropriately for your environmen...
January 2020 security updates are available!
We have released the January security updates to provide additional protections against malicious attackers. As a best practice, we encourage customers to turn on automatic updates. More information about this month’s security updates can be found in the Security Update Guide. As a reminder,...
January 2020 Security Updates: CVE-2020-0601
The January security updates include several Important and Critical security updates. As always, we recommend that customers update their systems as quickly as practical. Details for the full set of updates released today can be found in the Security Update Guide. We believe in Coordinated...
2018 年 11 月のセキュリティ更新プログラム (月例)
2019/2/14 更新: お知らせ Microsoft Dynamics 365 の脆弱性 CVE-2018-8654 の詳細ページを公開しました。脆弱性に対応するための更新プログラム...
2017 年 10 月のセキュリティ更新プログラム (月例)
2017/10/17 更新 本日、ADV170016 が廃止され、CVE-2017-13080が 2017 年 10 月のセキュリティ リリ...
BlueHat 2023: Connecting the security research community with Microsoft
We’re excited to welcome more than 400 members of the security research community from around the world to Redmond, Washington for BlueHat 2023. Hosted by the Microsoft Security Response Center MSRC, BlueHat is where the security research community, and Microsoft security professionals, come...
Microsoft Investigation – Threat actor consent phishing campaign abusing the verified publisher process
Summary On December 15th, 2022, Microsoft became aware of a consent phishing campaign involving threat actors fraudulently impersonating legitimate companies when enrolling in the Microsoft Cloud Partner Program MCPP formerly known as Microsoft Partner Network MPN. The actor used fraudulent partn...
Awareness and guidance related to potential Service Fabric Explorer (SFX) v1 web client risk
Summary Summary Microsoft was recently made aware of a Cross-Site Scripting XSS vulnerability CVE-2022-35829, that under limited circumstances, affects older versions of Service Fabric Explorer SFX. The current default SFX web client SFXv2 is not vulnerable to this attack. However, customers can...
Hunting for Cobalt Strike: Mining and plotting for fun and profit
Introduction Introduction Cobalt Strike is a commercial Command and Control framework built by Helpsystems. You can find out more about Cobalt Strike on the MITRE ATT&CK page. But it can also be used by real adversaries. In this post we describe how to use RiskIQ and other Microsoft technologies ...
Vulnerability Fixed in Azure Synapse Spark
Summary Summary Microsoft takes a proactive approach to continually probe our defenses, hunt for vulnerabilities, and seek new, innovative ways to protect our customers. Security researchers are an important part of this effort, and our collaborative partnership is critical in a world where...
Additional Guidance Regarding OMI Vulnerabilities within Azure VM Management Extensions
Last updated on October 5, 2021: See revision history located at the end of the post for changes. On September 14, 2021, Microsoft released fixes for three Elevation of Privilege EoP vulnerabilities and one unauthenticated Remote Code Execution RCE vulnerability in the Open Management...
2018 年 12 月のセキュリティ更新プログラム (月例)
2018/12/20 更新: 新たに定例外で公開した Internet Explorer の脆弱性 CVE-2018-8653 の情報を追加しました。 2018 年 12 月 12 日 日本時間、マイクロ...
Customer guidance for SharePoint vulnerability CVE-2025-53770
Revision Change Date 1.0 Information published 07/19/25 2.0 Clarified affected SharePoint product in summary 07/20/25 Added fix availability guidance Provided additional protections guidance regarding: Upgrade SharePoint products to supported versions if required Install July 2025 Security Update...
Announcing the Top MSRC 2020 Q3 Security Researchers
Following the MSRC’s 2020 Most Valuable Security Researchers announced during this year’s Black Hat, we’re excited to announce the top contributing researchers for the 2020 Third Quarter Q3! The top three researchers of the 2020 Q3 Security Researcher Leaderboard are: David Dworken 1800 points,...
July 2020 Security Update: CVE-2020-1350 Vulnerability in Windows Domain Name System (DNS) Server
Today we released an update for CVE-2020-1350, a Critical Remote Code Execution RCE vulnerability in Windows DNS Server that is classified as a ‘wormable’ vulnerability and has a CVSS base score of 10.0. This issue results from a flaw in Microsoft’s DNS server role implementation and affects all...
March 2020 security updates are available
We have released the March security updates to provide additional protections against malicious attackers. As a best practice, we encourage customers to turn on automatic updates. More information about this month’s security updates can be found in the Security Update Guide. The post March 2020...
Announcing the CVRF API 3.0 upgrade
At the Microsoft Security Response Center, we are committed to continuously improving the security and performance of our services to meet the evolving needs of our customers. We are excited to announce the rollout of the latest version of our Common Vulnerability Reporting CVRF API. This update...
New Research Paper: Pre-hijacking Attacks on Web User Accounts
In 2020, MSRC awarded two Identity Project Research Grants to support external researchers working to further strengthen the security of identity protocols and systems. Today we are pleased to release the results of the first of these projects. This research, led by independent security researche...
Azure Database for PostgreSQL Flexible Server Privilege Escalation and Remote Code Execution
MSRC was informed by Wiz, a cloud security vendor, under Coordinated Vulnerability Disclosure CVD of an issue with the Azure Database for PostgreSQL Flexible Server that could result in unauthorized cross-account database access in a region. By exploiting an elevated permissions bug in the Flexib...
Azure Database for PostgreSQL Flexible Server Privilege Escalation and Remote Code Execution
MSRC was informed by Wiz, a cloud security vendor, under Coordinated Vulnerability Disclosure CVD of an issue with the Azure Database for PostgreSQL Flexible Server that could result in unauthorized cross-account database access in a region. By exploiting an elevated permissions bug in the Flexib...
2021 年 9 月のセキュリティ更新プログラム (月例)
更新 9 月 17 日： 9 月の月例セキュリティ更新日に公開した Open Management Infrastructure OMI の脆弱性 CVE-2021-38645, CVE-2021-38649, CVE-2021-38648, CVE-2021-38647 に関して、追加のガイダン...
Microsoft Joins Open Source Security Foundation
Microsoft has invested in the security of open source software for many years and today I’m excited to share that Microsoft is joining industry partners to create the Open Source Security Foundation OpenSSF, a new cross-industry collaboration hosted at the Linux Foundation. The OpenSSF brings...
January 2020 Security Updates: CVE-2020-0601
The January security updates include several Important and Critical security updates. As always, we recommend that customers update their systems as quickly as practical. Details for the full set of updates released today can be found in the Security Update Guide. We believe in Coordinated...
May 2018 security update release
Today, we released security updates to provide additional protections against malicious attackers. As a best practice, we encourage customers to turn on automatic updates. More information about this month’s security updates can be found on the Security Update Guide. MSRC team...
ActiveX Control issue being addressed in Update Tuesday
Late last Friday, November 8, 2013, a vulnerability, CVE-2013-3918, affecting an Internet Explorer ActiveX Control was publically disclosed. We have confirmed that this vulnerability is an issue already scheduled to be addressed in “Bulletin 3”, which will be released as MS13-090, as listed in th...
MS13-080 addresses two vulnerabilities under limited, targeted attacks
Today we released MS13-080 which addresses nine CVEs in Internet Explorer. This bulletin fixes multiple security issues, including two critical vulnerabilities that haven been actively exploited in limited targeted attacks, which we will discuss in details in this blog entry. CVE-2013-3893: the...
Why XSS still matters: MSRC’s perspective on a 25-year-old threat
Cross-Site Scripting XSS has been a known vulnerability class for two decades, yet it continues to surface in modern applications, including those built with the latest frameworks and cloud-native architectures. At Microsoft, we still receive a steady stream of XSS reports across our services, fr...
Microsoft Actions Following Attack by Nation State Actor Midnight Blizzard
The Microsoft security team detected a nation-state attack on our corporate systems on January 12, 2024, and immediately activated our response process to investigate, disrupt malicious activity, mitigate the attack, and deny the threat actor further access. Microsoft has identified the threat...
Microsoft mitigates China-based threat actor Storm-0558 targeting of customer email
UPDATE: Microsoft performed a comprehensive technical investigation into the acquisition of the Microsoft account consumer signing key, including how it was used to access enterprise email. Our technical investigation has concluded, and on September 6, 2023, we published our investigation finding...
Microsoft Investigation - Threat actor consent phishing campaign abusing the verified publisher process
Summary Summary On December 15th, 2022, Microsoft became aware of a consent phishing campaign involving threat actors fraudulently impersonating legitimate companies when enrolling in the Microsoft Cloud Partner Program MCPP formerly known as Microsoft Partner Network MPN. The actor used fraudule...
Anatomy of a Security Update
The Microsoft Security Response Center is part of the defender community and on the front line of security response for our customers and the company. Our mission is to protect customers and Microsoft from current and emerging threats related to security and privacy. We monitor threats and provid...
Increasing Representation of Women in Security Research
Microsoft is committed to partnering with and supporting women in security research. Whether it’s growing women early in their career, or connecting people with mentors, we want to be a part of the journey. Throughout Womens History Month we intentionally sought opportunities to engage with women...
Solving Uninitialized Kernel Pool Memory on Windows
This blog post outlines the work that Microsoft is doing to eliminate uninitialized kernel pool memory vulnerabilities from Windows and why we’re on this path. For a background on why uninitialized memory matters and what options have been used in the past to tackle this issue, please see our...
Announcing the Xbox Bounty program
Announcing the new Xbox Bounty. The Xbox bounty program invites gamers, security researchers, and technologists around the world to help identify security vulnerabilities in the Xbox network and services, and share them with the Microsoft Xbox team through Coordinated Vulnerability Disclosure CVD...
日本セキュリティチーム ブログ移行のお知らせ
日本セキュリティチーム ブログが、新しいプラットフォームに移行してアドレスが変更になりました。旧アドレス https://blogs.technet.microsoft.com/jpsecurity/ をブラウザのお気に入りに登録や、RSS フィードの登録等で利用されている方は、お手数ですが、新たなアドレス https://aka.ms/jpsecurity へ変更をお願いします。...
December 2018 Security Update Release
Today, we released a security update for Internet Explorer after receiving a report from Google about a new vulnerability being used in targeted attacks. Customers who have Windows Update enabled and have applied the latest security updates, are protected automatically. We encourage customers to...
March 2018 security update release
Today, we released security updates to provide additional protections against malicious attackers. By default, Windows 10 receives these updates automatically, and for customers running previous versions, we recommend they turn on automatic updates as a best practice. More information about this...
BlueHat Asia 2025: Closing soon: Submit your papers by September 14, 2025
The next chapter of the Microsoft Security Response Center’s MSRC BlueHat security conference is fast approaching. BlueHat Asia 2025 will take place in Bengaluru, India, on November 5 – 6, 2025 and the Call for Papers is now open. Submissions will be accepted through September 14, 2025. Now in it...
postMessaged and Compromised
At Microsoft, securing the ecosystem means more than just fixing bugs—it means proactively hunting for variant classes, identifying systemic weaknesses, and working across teams to protect customers before attackers ever get the chance. This blog highlights one such effort: a deep dive into the...
Congratulations to the Top MSRC 2024 Q4 Security Researchers!
Congratulations to all the researchers recognized in this quarter’s Microsoft Researcher Recognition Program leaderboard! Thank you to everyone for your hard work and continued partnership to secure customers. The top three researchers of the 2024 Q4 Security Researcher Leaderboard are Suresh,...
Announcing the Adaptive Prompt Injection Challenge (LLMail-Inject)
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...
Azure Kubernetes Service (AKS) Threat Hunting
As more businesses shift away from running workloads on dedicated virtual machines to running them inside containers using workload orchestrators like Kubernetes, adversaries have become more interested in them as targets. Moreover, the benefits Kubernetes provides for managing workloads are also...
Publishing CBL-Mariner CVEs on the Security Update Guide CVRF API
Microsoft is pleased to announce that beginning January 11, 2023, we will publish CBL-Mariner CVEs in the Security Update Guide SUG Common Vulnerability Reporting Framework CVRF API. CBL-Mariner is a Linux distribution built by Microsoft to power Azure’s cloud and edge products and services and i...
Security Update Guide Improvement – Representing Hotpatch Updates
Today we are updating the way Microsoft Security Update Guide SUG represents the Windows Hotpatch feature to make it easier for users to identify the hotpatch and security updates. Hotpatching was introduced a year ago as a new way to install updates on supported Windows Server Azure Edition...
Announcing the Launch of the Azure SSRF Security Research Challenge
Microsoft is excited to announce the launch of a new, three-month security research challenge under the Azure Security Lab initiative. The Azure Server-Side Request Forgery SSRF Research Challenge invites security researchers to discover and share high impact SSRF vulnerabilities in Microsoft...