Using Rust in Windows

This Saturday 9th of November, there will be a keynote from Microsoft engineers Ryan Levick and Sebastian Fernandez at RustFest Barcelona. They will be talking about why Microsoft is exploring Rust adoption, some of the challenges we’ve faced in this process, and the future of Rust adoption in...

日本語でマイクロソフトに脆弱性を報告する方法

2021 年 6 月 17 日に、関連ブログ記事「マイクロソフト脆弱性報告窓口 ガイド 日本語」を公開しています。こち...

Designing a COM library for Rust

I interned with Microsoft as a Software Engineering Intern in the MSRC UK team in Cheltenham this past summer. I worked in the Safe Systems Programming Language SSPL group, which explores safe programming languages as a proactive measure against memory-safety related vulnerabilities. This blog po...

Calling all breakers & builders: BlueHat Seattle registration is open!

Exciting changes are coming to BlueHat Seattle 2019! If you’d like to attend this premier security conference, we have good news for you: registration for BlueHat Seattle is now open and we hope you register. Wait, isn't BlueHat invitation-only? It is…but if we haven’t sent you an invitation, we...

Attacking the VM Worker Process

In the past year we invested a lot of time making Hyper-V research more accessible to everyone. Our first blog post, “First Steps in Hyper-V Research”, describes the tools and setup for debugging the hypervisor and examines the interesting attack surfaces of the virtualization stack components. W...

September 2019 Security Updates

We have released the September 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,...

August 2019 Security Updates

We have released the August 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, Windo...

July 2019 Security Update Release

We have released the July 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...

2019 年 7 月のセキュリティ更新プログラム (月例)

2019 年 7 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...

Time travel debugging: It’s a blast! (from the past)

The Microsoft Security Response Center MSRC works to assess vulnerabilities that are externally reported to us as quickly as possible, but time can be lost if we have to confirm details of the repro steps or environment with the researcher to reproduce the vulnerability. Microsoft has made our...

Microsoft Bounty Program Updates: Faster bounty review, faster payments, and higher rewards

In 2018 The Microsoft Bounty Program awarded over $2,000,000 to encourage and reward external security research in key technologies to protect our customers. Building on that success, we are excited to announce a number of improvements in our bounty programs to better serve the security research...

December 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...

December 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...

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 8.1 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 10 をお使いのお客...

Windows Update の利用手順 - 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...

Behind BlueHat: The Art

We are just one day away from the opening of BlueHat v18 and excitement is building. One of the questions that I have gotten more frequently the past couple years is about the artwork we use for BlueHat. So yes there is a theme. 😊 Starting in 2014, we introduced the Top Hat logo which the communi...

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...

2018 年 8 月のセキュリティ更新プログラム (月例)

2018 年 8 月 15 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...

2018 年 5 月のセキュリティ更新プログラム (月例)

2018 年 5 月 9 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...

Hyper-V Debugging Symbols Are Publicly Available

The security of Microsoft’s cloud services is a top priority for us. One of the technologies that is central to cloud security is Microsoft Hyper-V which we use to isolate tenants from one another in the cloud. Given the importance of this technology, Microsoft has made and continues to make...

投機的実行に関する報奨金プログラムの開始

本記事は、Microsoft Security Response Center のブログ “Speculative Execution Bounty Launch” 2016 年 3 月 14 日 米国...

November 2017 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...

Windows Defender Exploit Guard: 攻撃表面を縮小して次世代型マルウェアに対抗する

本記事は、Windows Security のブログ “Windows Defender Exploit Guard: Reduce the attack surface against next-generation malware” 2017 年 10 月 23 日 米国...

EMET II のさらに先へ - Windows Defender Exploit Guard

本記事は、Security Research & Defense のブログ "Moving Beyond EMET II – Windows Defender Exploit Guard" 2017 年 8 月 9 日 米国時間公開 を翻訳したもので...

Moving Beyond EMET II – Windows Defender Exploit Guard

Since we last wrote about the future of EMET and how it relates to Windows 10 back in November 2016 see Moving Beyond EMET, we have received lots of invaluable feedback from EMET customers and enthusiasts regarding the upcoming EMET end of life. Based on that feedback, we are excited to share...

The MSRC 2017 list of “Top 100” security researchers

Security researchers play an essential role in Microsoft’s security strategy and are key to community-based defense. To show our appreciation for their hard work and partnership, each year at BlackHat North America, the Microsoft Security Response Center highlights contributions of these...

[IT 管理者向け] TLS 1.2 への移行を推奨しています

こんにちは、垣内由梨香です データを暗号化し安全にやり取りを行う Transport Layer Security TLS。TLS は利用しているが、詳細なバージョンまでは把握してない、そんな方も多いのではないでしょうか？暗号プロトコルは「使ってさえいれば安全」ではありません。現在の脅威に対応できるバージョンのみを利用しリスクを下げることが重要です。 マイクロソフトでは、より安全な TLS 1.2 へ移行していくことを推奨しています。 2020/9/7 追記 各製品、サービスにおける TLS 1.0/1.1 の廃止予定については、次の情報を参考にしてください。 TLS 1.0 and 1...

Update on Petya malware attacks

As happened recently with WannaCrypt, we again face a malicious attack in the form of ransomware, Petya. In early reports, there was a lot of conflicting information reported on the attacks, including conflation of unrelated and misleading pieces of data, so Microsoft teams mobilized to investiga...

2017 年 5 月のセキュリティ更新プログラム (月例)

2017 年 5 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...

2017 年 4 月のセキュリティ更新プログラム (月例)

2017 年 4 月 12 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...

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...

Office 365 のセキュリティ研究者の皆さまへ: 2017 年 3 月 ～ 5 月は報奨金が 2 倍になります

本記事は、Microsoft Security Response Center のブログ “Office 365 security researchers: Double your bounties March-May 2017” 2017 年 3 月 1 日 米国時間...

February 2017 security update release

UPDATE: 2/15/17: We will deliver updates as part of the planned March Update Tuesday, March 14, 2017. Our top priority is to provide the best possible experience for customers in maintaining and protecting their systems. This month, we discovered a last minute issue that could impact some custome...

January 2017 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...

BlueHat v16 Keynote announced

Microsoft is excited to announce David Kennedy, CEO of TrustedSec and Binary Defense Systems, as the BlueHat v16 keynote speaker. David is a well-known speaker from the community, a published author, and the founder of the DerbyCon Security Conference. His keynote, entitled “The Security Monty...

BlueHat IL 2017 Announced

Microsoft is thrilled to announce BlueHat IL 2017. This will mark the first time BlueHat is held in Tel Aviv and it will take place on January 24-25, 2017. Given its location, Israel further serves as a harness which draws in researchers from across Europe, Asia and the Middle East...

Update to the Microsoft Edge Web Platform on Windows Insider Preview Bug Bounty Program terms

On August 4, 2016 we launched a bounty program that targets Remote Code Execution RCE vulnerabilities in Microsoft Edge on the Windows Insider Preview Slow WIP slow. Today, we will be making additions to this bounty program. Since security is a continuous effort and not a destination, we prioriti...

September 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...

BlueHat v16 Schedule Announced

Over the summer we had overwhelming response to our BlueHat v16 call for papers. We would like to give a special thanks to all who submitted papers for consideration. The range of content and quality of content was exceptional. So with that, today we are happy to announce our schedule for the...

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...

August 2014 Security Bulletin Webcast and Q&A

Today, we published the August 2014 Security Bulletin webcast questions and answers page along with the webcast replay. We answered ten questions on air, with the majority focusing on the update for Internet Explorer. Here is the video replay: We are aware of some issues related to the recent...

Microsoft releases Security Advisory 2974294

Today, we released Security Advisory 2974294 to inform global customers about an update for the Microsoft Malware Protection Engine. This update addresses a privately disclosed issue and fixes a vulnerability that could allow a denial of service if the Microsoft Malware Protection Engine scans a...

An Overview of KB2871997

An Overview of KB2871997 Microsoft recently released KB2871997 for Windows 7, Windows 8, Windows Server 2008R2, and Windows Server 2012. This blog will give an overview of the feature changes, their impact, and some important configuration changes that can be made in conjunction with the update t...

May 2014 Security Bulletin Webcast and Q&A

Today we published the May 2014 Security Bulletin Webcast Questions & Answers page. We answered 17 questions in total, with the majority focusing on the update for SharePoint MS14-022, Group Policy MS14-025 and Internet Explorer MS14-029. Here is the video replay: We invite you to join us for the...

MS14-025: An Update for Group Policy Preferences

Today, we released an update to address a vulnerability in Group Policy Preferences MS14-025. Group Policy Preferences was an addition made to Group Policy to extend its capabilities. Among other things, Group Policy Preferences allows an administrator to configure: Local administrator accounts...

April 2014 Security Bulletin Webcast and Q&A

Today we published the April 2013 Security Bulletin Webcast Questions & Answers page. We answered 13 questions in total, with the majority focusing on the update for Internet Explorer MS14-018 and the Windows 8.1 Update KB2919355. Two questions that were not answered on air have been included on...

MS14-019 – Fixing a binary hijacking via .cmd or .bat file

Command .cmd and batch .bat files can be directly provided as input to the CreateProcess as if it is an executable. CreateProcess uses the cmd.exe automatically to run the input .cmd or .bat. Today, with the bulletin MS14-019 we are fixing a vulnerability, where in particular scenario it is...

Advance Notification Service for the April 2014 Security Bulletin Release

Today we provide advance notification for the release of four bulletins, two rated Critical and two rated Important in severity. These updates address issues in Microsoft Windows, Office and Internet Explorer. The update provided through MS14-017 fully addresses the Microsoft Word issue first...

Software defense: mitigating common exploitation techniques

In our previous posts in this series, we described various mitigation improvements that attempt to prevent the exploitation of specific classes of memory safety vulnerabilities such as those that involve stack corruption, heap corruption, and unsafe list management and reference count...

Advance Notification Service for December 2013 Security Bulletin Release

Today we’re providing advance notification for the release of 11 bulletins, five Critical and six Important, for December 2013. The Critical updates address vulnerabilities in Internet Explorer, Windows, Microsoft Exchange and GDI+. The Critical update for GDI+ fully addresses the publicly...