更新プログラムが正しくインストールされたかを確認する方法 – Windows 10 の場合

本ブログ記事は初級レベルから中級レベルのコンピューター ユーザーを対象にしています。 Windows 8.1 をお使いのお客...

セキュリティ更新プログラム リリース スケジュール (2018 年)

概要 概要 セキュリティ更新プログラムは通常、米国日付の毎月第 2 火曜日に公開します。日本では、時差の関係...

Vulnerability hunting with Semmle QL, part 1

Previously on this blog, we’ve talked about how MSRC automates the root cause analysis of vulnerabilities reported and found. After doing this, our next step is variant analysis: finding and investigating any variants of the vulnerability. It’s important that we find all such variants and patch...

Microsoft’s Top 100 Security Researchers – Black Hat 2018 Edition

This morning we are excited to unveil the security researcher leaderboard at the Black Hat Security Conference. This list recognizes the top security researchers who have contributed research to the Microsoft products and services. If you are curious on how we build the list, check out our blog...

Announcing Changes to Microsoft’s Mitigation Bypass Bounty

Today we’re announcing a change to the Mitigation Bypass Bounty that removes Control Flow Guard CFG from the set of in-scope mitigations. In this blog, we’ll provide additional background and explain why we’re making this change. Mitigation Bypass Bounty Background Mitigation Bypass Bounty...

Mitigating speculative execution side channel hardware vulnerabilities

On January 3rd, 2018, Microsoft released an advisory and security updates related to a newly discovered class of hardware vulnerabilities involving speculative execution side channels known as Spectre and Meltdown that affect AMD, ARM, and Intel CPUs to varying degrees. If you haven’t had a chanc...

January 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...

January 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...

2018 年 1 月のセキュリティ更新プログラム (月例)

2018 年 1 月 10 日 日本時間、マイクロソフトは以下のソフトウェアのセキュリティ更新プログラムを公開しまし...

Windows Defender Advanced Threat Protection で反射型の DLL 読み込みを検出

本記事は、Windows Security のブログ “Detecting reflective DLL loading with Windows Defender ATP” 2017 年 11 月 13 日 米国時間公開...

VulnScan – Automated Triage and Root Cause Analysis of Memory Corruption Issues

The Microsoft Security Response Center MSRC receives reports about potential vulnerabilities in our products and it’s the job of our engineering team to assess the severity, impact, and root cause of these issues. In practice, a significant proportion of these reports turn out to be memory...

Announcing the Windows Bounty Program

Windows 10 represents the best and newest in our strong commitment to security with world-class mitigations. One of Microsoft’s longstanding strategies toward improving software security involves investing in defensive technologies that make it difficult and costly for attackers to find, exploit...

Eternal Synergy Exploit Analysis

Introduction Introduction Recently we announced a series of blog posts dissecting the exploits released by the ShadowBrokers in April 2017; specifically some of the less explored exploits. This week we are going to take a look at Eternal Synergy, an SMBv1 authenticated exploit. This one is...

Tales from the MSRC: from pixels to POC

Is this thing still on? It’s been a while since we’ve posted to this blog and we think it’s time to start posting deep technical content about Security Research & Defense SRD again. For readers who are new or may have forgotten, this blog is the home of the MSRC Vulnerabilities & Mitigations...

ランサムウェア WannaCrypt 攻撃に関するお客様ガイダンス

概要 概要 2017 年 5 月 12 日 米国時間 より、マイクロソフトは、イギリスを始めとする複数の国の医療機関やその...

Coming together to address Encapsulated PostScript (EPS) attacks

Today’s security updates include three updates that exemplify how the security ecosystem can come together to help protect consumers and enterprises. We would like to thank FireEye and ESET for working with us. Customers that have the latest security updates installed are protected against the...

Microsoft BlueHat v17 Dates Announced - Update 4/3/2017

Update - The Call For Papers CFP for BlueHat v17 will be held from 6/1/2017 - 8/18/2017. We will be setting up a submissions portal for web based submissions of papers. The portal will be live on 6/1/2017. Please do not send submissions to [email protected]. Microsoft is pleased to announce...

March 2017 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. Security bulletins were also...

EMET 5.52 update is now available

EMET 5.52 is the latest version of the Enhanced Mitigation Experience Toolkit EMET and is now available for download. EMET 5.52 is a minor update from EMET 5.51 to address the following: An issue with the EAF mitigation that causes some applications to hang on Windows 7 SP1. A fix to the MSI...

Security Engineering Evolution in Office 2016 for Mac

Security is a critical component in all our products at Microsoft. An emphasis on strong security starts at the beginning of all our work, including threat modelling as part of the design process and the consideration of Apple’s own security recommendations for our products on Apple’s platforms. ...

BlueHat v16 Announced

Microsoft is pleased to announce our sixteenth BlueHat Security Conference set for November 3-4, 2016 at the Microsoft Conference Center here in Redmond. BlueHat is a unique opportunity for Microsoft engineers and the security community to come together learn about the current threat landscape an...

May 2016 security update release

Today we released security updates to provide additional protections against malicious attackers. As a best practice, we encourage customers to apply security updates as soon as they are released. More information about this month’s security updates and advisories can be found in the Security...

Triaging the exploitability of IE/EDGE crashes

Introduction Both Internet Explorer IE and Edge have seen significant changes in order to help protect customers from security threats. This work has featured a number of mitigations that together have not only rendered classes of vulnerabilities not-exploitable, but also dramatically raised the...

Enhanced Mitigation Experience Toolkit (EMET) version 5.5 Beta is now available

Enhanced Mitigation Experience Toolkit EMET version 5.5 Beta is now available The Enhanced Mitigation Experience Toolkit EMET benefits enterprises and all computer users by helping to protect against security threats and breaches that can disrupt businesses and daily lives. It does this by...

Microsoft Bounty Programs Expansion - Bounty for Defense, Authentication Bonus, and RemoteApp

I am very pleased to be releasing additional expansions of the Microsoft Bounty Programs. Please stop by the Microsoft Networking Lounge at Black Hat, August 5-6, to learn more about these programs; or, visit https://aka.ms/BugBounty. We are raising the Bounty for Defense maximum from $50,000 USD...

Out-of-band release for Security Bulletin MS14-068

On Tuesday, November 18, 2014, at approximately 10 a.m. PST, we will release an out-of-band security update to address a vulnerability in Windows. We strongly encourage customers to apply this update as soon as possible, following the directions in the security bulletin. More information about th...

November 2014 Updates

Today, as part of Update Tuesday, we released 14 security updates – four rated Critical, nine rated Important, and two rated Moderate, to address 33 Common Vulnerabilities and Exposures CVEs in Microsoft Windows, Internet Explorer IE, Office, .NET Framework, Internet Information Services IIS,...

Advance Notification Service for the October 2014 Security Bulletin Release

Today, we provide advance notification for the release of nine Security Bulletins. Three of these updates are rated Critical, five are rated as Important, and one is rated Moderate in severity. These updates are for Microsoft Windows, Internet Explorer, Office, .NET Framework, and ASP.NET. As per...

The September 2014 Security Updates

Today, as a part of our regular Update Tuesday process, we released four security bulletins – one rated Critical and three rated Important in severity – to address 42 Common Vulnerabilities & Exposures CVEs in Microsoft Windows, Internet Explorer, .NET Framework, and Lync Server. We encourage you...

Authenticity and the November 2013 Security Updates

If you haven't had a chance to see the movie Gravity, I highly recommend you take the time to check it out. The plot moves a bit slowly at times, but director Alfonso Cuaron's work portrayal of zero gravity is worth the ticket price alone. Add in stellar acting and you end up with an epic movie...

Security Advisory 2880823: Recommendation to discontinue use of SHA-1

Microsoft is recommending that customers and CA’s stop using SHA-1 for cryptographic applications, including use in SSL/TLS and code signing. Microsoft Security Advisory 2880823 has been released along with the policy announcement that Microsoft will stop recognizing the validity of SHA-1 based...

October 2013 Security Bulletin Webcast, Q&A, and Slide Deck

Today we’re publishing the October 2013 Security Bulletin Webcast Questions & Answers page. We fielded 11 questions during the webcast, with specific bulletin questions focusing primarily on the SharePoint MS13-084 and Kernel-Mode Drivers MS13-081 bulletins. There was one additional question that...

Advance Notification Service for September 2013 Security Bulletin Release

In celebration of kids heading back to school, today we’re providing advance notification for the release of 14 bulletins, four Critical and 10 Important, for September 2013. The Critical updates address issues in Internet Explorer, Outlook, SharePoint and Windows. As always, we’ve scheduled the...

August 2013 Security Bulletin Webcast, Q&A, and Slide Deck

Today we’re publishing the August 2013 Security Bulletin Webcast Questions & Answers page. We fielded 13 questions on various topics during the webcast, with specific bulletin questions focusing primarily on Exchange Server MS13-061 and Windows Kernel MS13-063. There were 3 additional questions...

How Brad Schlintz built a life of freedom and impact through security research

At Microsoft Security Response Center MSRC, we celebrate the diverse paths that bring researchers to our community. Brad Schlintz’s story is one of curiosity, resilience, and a relentless drive to learn, spanning rural beginnings, career pivots, and a life shaped by both technology and travel. In...

Microsoft mitigates set of cross-site scripting (XSS) vulnerabilities in Azure Bastion and Azure Container Registry

Summary Microsoft recently mitigated a set of cross-site scripting vulnerabilities affecting Azure Bastion and Azure Container Registry ACR. Exploitation of these vulnerabilities could have potentially allowed for an unauthorized user to gain access to a target user's session within the compromis...

Announcing The BlueHat Podcast: Listen and Subscribe Now!

Available today on all major podcast platforms is The BlueHat Podcast, a new series of security research focused conversations, continuing the themes from the BlueHat 2023 conference session recordings available to watch here. Since 2005, BlueHat has been where the security research community, an...

Guidance on Potential Misconfiguration of Authorization of Multi-Tenant Applications that use Azure AD

Summary Microsoft has addressed an authorization misconfiguration for multi-tenant applications that use Azure AD, initially discovered by Wiz, and reported to Microsoft, that impacted a small number of our internal applications. The misconfiguration allowed external parties read and write access...

Microsoft Mitigates Vulnerability in Jupyter Notebooks for Azure Cosmos DB

Summary Microsoft recently fixed an authentication bypass vulnerability in Jupyter Notebooks for Azure Cosmos DB currently in preview reported by Orca Security. Customers not using Jupyter Notebooks 99.8% of Azure Cosmos DB customers do NOT use Jupyter notebooks were not susceptible to this...

Improvements in Security Update Notifications Delivery - And a New Delivery Method

At MSRC, we are passionate about ensuring our customers have a positive experience when they use the Microsoft Security Update Guide SUG. A big part of improving that experience is ensuring that customers have timely and easily accessible notifications. As such we have two important announcements...

Improvements in Security Update Notifications Delivery - And a New Delivery Method

At MSRC, we are passionate about ensuring our customers have a positive experience when they use the Microsoft Security Update Guide SUG. A big part of improving that experience is ensuring that customers have timely and easily accessible notifications. As such we have two important announcements...

好奇心旺盛、革新的、創造的、コミュニティ主導型:Cyb3rWard0g、ロベルトロドリケスに会う

本ブログは、Curious, Innovative, Creative, Community Driven: Meet Cyb3rWard0g, Roberto Rodriquez の抄訳版です。最新の情報は原文を参照してください。 大きく...

Microsoft Bug Bounty Programs Year in Review: $13.7M in Rewards

The Microsoft Bug Bounty Programs and partnerships with the global security research community are important parts of Microsoft’s holistic approach to defending customers against security threats. Our bounty programs incentivize security research in high-impact areas to stay ahead of the...

2022 年 6 月のセキュリティ更新プログラム (月例)

2022 年 6 月 14 日（米国時間）、マイクロソフトは、マイクロソフト製品に影響する脆弱性を修正するために、セキ...

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...

Expanding High Impact Scenario Awards for Microsoft Bug Bounty Programs

We are excited to announce the addition of scenario-based bounty awards to the Dynamics 365 and Power Platform Bounty Program and M365 Bounty Program. Through these new scenario-based bounty awards, we encourage researchers to focus their research on vulnerabilities that have the highest potentia...

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...

An Armful of CHERIs

Today, Arm announced that the first silicon supporting the Morello prototype architecture, a research project led by Arm, Microsoft, University of Cambridge and others, is now available on a limited run of demonstration boards, which are being shipped from today to industry partners for testing...

An Armful of CHERIs

Today, Arm announced that the first silicon supporting the Morello prototype architecture, a research project led by Arm, Microsoft, University of Cambridge and others, is now available on a limited run of demonstration boards, which are being shipped from today to industry partners for testing...

Azure App Service Linux source repository exposure

MSRC was informed by Wiz.io, a cloud security vendor, under Coordinated Vulnerability Disclosure CVD of an issue where customers can unintentionally configure the .git folder to be created in the content root, which would put them at risk for information disclosure. This, when combined with an...