The Next Leap Forward in Cyber Defense: Taking Action to Help Defeat Adversaries

It is often said that attackers have an advantage, because the defenders have to protect every part of their systems all the time, while the attacker only has to find one way in. This argument oversimplifies the security landscape and the real strength that defenders can achieve if they work...

Microsoft Releases Security Advisory 2953095

Today we released Security Advisory 2953095 to notify customers of a vulnerability in Microsoft Word. At this time, we are aware of limited, targeted attacks directed at Microsoft Word 2010. An attacker could cause remote code execution if someone was convinced to open a specially crafted Rich Te...

Advance Notification Service for the March 2014 Security Bulletin Release

Today we provide advance notification for the release of five bulletins for March 2014, two rated Critical and thee rated Important in severity. These updates address issues in Microsoft Windows, Internet Explorer and Silverlight. The update provided in MS14-012 fully addresses the issue first...

Microsoft Releases Security Advisory 2934088

Today, we released Security Advisory 2934088 regarding an issue that impacts Internet Explorer 9 and 10. Internet Explorer 6, 7, 8 and 11 are not affected. At this time, we are only aware of limited, targeted attacks against Internet Explorer 10. This issue allows remote code execution if users...

Predictions for 2014 and the December 2013 Security Bulletin Webcast, Q&A, and Slide Deck

Today we’re publishing the December 2013 Security Bulletin Webcast Questions & Answers page. We answered 17 questions in total, with the majority of questions focusing on the Graphics Component bulletin MS13-096, Security Advisory 2915720 and Security Advisory 2905247. We also wanted to note a ne...

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...

Assessing risk for the November 2013 security updates

Today we released eight security bulletins addressing 19 CVE’s. Three bulletins have a maximum severity rating of Critical while the other five have a maximum severity rating of Important. We hope that the table below helps you prioritize the deployment of the updates appropriately for your...

Congratulations to James Forshaw Recipient of Our First $100,000 Bounty for New Mitigation Bypass Techniques!

Congratulations to James Forshaw for coming up with a new exploitation technique to get our first ever $100,000 bounty. A security vulnerability researcher with Context Information Security, James already came in hot with design level bugs he found during the IE11 Preview Bug Bounty, and we’re...

The October 2013 security updates

This month we release eight bulletins – four Critical and four Important - which address 25 unique CVEs in Microsoft Windows, Internet Explorer, SharePoint, .NET Framework, Office, and Silverlight. For those who need to prioritize their deployment planning, we recommend focusing on MS13-080,...

Advance Notification Service for October 2013 Security Bulletin Release

Today we’re providing advance notification for the release of eight bulletins, four Critical and four Important, for October 2013. The Critical updates address vulnerabilities in Internet Explorer, .NET Framework and Windows. The Critical update for Internet Explorer will be a cumulative update...

Software Defense Series: Exploit mitigation and vulnerability detection

Software Defense is a broad topic requiring a multipronged approach including: - the processes and tooling associated with secure development that we try and encapsulate within the Microsoft SDL, - core OS countermeasures that make exploitation of a given vulnerability more difficult for an...

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...

Running in the wild, not for so long

Over the weekend we received a report from our partners about a possible unpatched Internet Explorer vulnerability being exploited in the wild. The exploit code uses a memory corruption bug triggered from a webpage but it deeply leverages a Flash SWF file in order to achieve reliable exploitation...

Assessing risk for the June 2013 security updates

Today we released five security bulletins addressing 23 CVE’s. One bulletin has a maximum severity rating of Critical, and four have a maximum severity rating of Important. We hope that the table below helps you prioritize the deployment of the updates appropriately for your environment. Bulletin...

Java: A Fix it for when you cannot let go

There is much to say about the use of Java in both consumer and enterprise environments. Like any other platforms, it has both devoted supporters and fervent critics. But for most, Java is a requirement, a means to an end. In the past few years, Java as a platform has been the target of numerous...

From first report to MVR: Harun’s path in cloud security research

Harun’s relationship with technology began early, driven by curiosity rather than obligation. While still in high school, he taught himself Pascal and C simply because he wanted to understand how things worked. Those languages never became central to his professional career, but they shaped how h...

Congratulations to the top MSRC 2026 Q1 security researchers!

Congratulations to all the researchers recognized in this quarter’sMicrosoft Researcher Recognition Programleaderboard! Thank you to everyone for your hard work and continued partnership to secure customers...

Best practices regarding Azure Storage Keys, Azure Functions, and Azure Role Based Access

Summary Azure provides developers and security operations staff a wide array of configurable security options to meet organizational needs. Throughout the software development lifecycle, it is important for customers to understand the shared responsibility model, as well as be familiar with vario...

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...

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...

Curious, Innovative, Creative, Community Driven: Meet Cyb3rWard0g, Roberto Rodriquez

When I grow up I want to be? Dancer or a veterinarian Happiest memories: Tearing up the dance floor at weddings and playing soccer in the streets of Lima, Peru Previous Job roles : Mopped floors for McDonalds, packed boxes at an Avon warehouse, Manager at Olive Garden, Beer taster/server and then...

Researcher Spotlight: Cyber Viking Nate Warfield is Here to Help

“There are few jobs where I can say, I make two billion people more secure on the internet every single day.” Childhood Look: Goth kid, all in black Current Look: Cyber Viking Childhood hobby: Head banging to Metallica, Marilyn Manson, and Guns N’ Roses Current hobby: n0x08 DJ’s Live events aroun...

[IT 管理者むけ] Active Directoryのセキュリティ強化への対応をご確認ください

2021 年 11 月以降のセキュリティ更新プログラムには、脆弱性を解決するために、Active Directory における 4 件のセ...

BlueHat is Back!

After a short hiatus, BlueHat is coming back with a vengeance! And we’ve got big plans for the entire researcher community. But first, I must apologize. It’s been a while since you have heard from us. We didn’t have BlueHat 2020 or 2021, and we know that was disappointing. It was partly due to th...

2021 年 11 月のセキュリティ更新プログラム (月例)

2021 年 11 月 10 日 日本時間、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...

Coordinated disclosure of vulnerability in Azure Container Instances Service

Microsoft recently mitigated a vulnerability reported by a security researcher in the Azure Container Instances ACI that could potentially allow a user to access other customers’ information in the ACI service. Our investigation surfaced no unauthorized access to customer data. Out of an abundanc...

Update on the vulnerability in the Azure Cosmos DB Jupyter Notebook Feature

On August 12, 2021, a security researcher reported a vulnerability in the Azure Cosmos DB Jupyter Notebook feature that could potentially allow a user to gain access to another customer's resources by using the account's primary read-write key. We mitigated the vulnerability immediately. Our...

Point and Print の既定動作の変更

本記事は「Point and Print Default Behavior Change」の日本語抄訳です。 "PrintNightmare" と総称されるいくつかの脆弱性を調査した...

Congratulations to the MSRC 2021 Most Valuable Security Researchers!

The MSRC Researcher Recognition Program offers public thanks and acknowledgement to the researchers who help protect customers through discovering and sharing security vulnerabilities under Coordinated Vulnerability Disclosure. Today, we are excited to recognize this year’s Most Valuable Security...

Microsoft Bug Bounty Programs Year in Review: $13.6M in Rewards

Partnering with the security research community is an important part of Microsoft’s holistic approach to defending against security threats. Bug bounty programs are one part of this partnership. By discovering and reporting vulnerabilities to Microsoft through Coordinated Vulnerability Disclosure...

“BadAlloc” – Memory allocation vulnerabilities could affect wide range of IoT and OT devices in industrial, medical, and enterprise networks

Microsoft’s Section 52, the Azure Defender for IoT security research group, recently uncovered a series of critical memory allocation vulnerabilities in IoT and OT devices that adversaries could exploit to bypass security controls in order to execute malicious code or cause a system crash. These...

Exchange Server の脆弱性の緩和策

「Microsoft Exchange Server Vulnerabilities Mitigations – March 2021」の日本語抄訳です。 マイクロソフトは先週公開したブログにて、...

New and Improved Report Abuse Portal and API!

The Report Abuse CERT Portal and Report Abuse API have played a significant role in MSRC’s response to suspected cyberattacks, privacy issues, and abuse originating from Microsoft Online Services. With the contributions from our wonderful community of reporters, we continue to gain insightful...

Top MSRC 2020 Q4 Security Researchers – Congratulations!

We’re excited to announce the top contributing researchers for the 2020 Fourth Quarter Q4! Congratulations to all of the researchers who made this quarter’s leaderboard and a huge thank you to everyone who continues to help secure our customers and the ecosystem. The top three researchers of the...

2020 年 12 月のセキュリティ更新プログラム (月例)

2020 年 12 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...

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...

Concluding the Azure Sphere Security Research Challenge, Microsoft Awards $374,300 to Global Security Research Community

The Azure Sphere Security Research Challenge brought together 70 researchers from 21 countries to help secure Azure Sphere customers and expand Microsoft’s partnerships with the global IoT security research community. During the three-month Azure Sphere Security Research Challenge, researchers...

New and improved Security Update Guide!

We’re excited to announce a significant update to the Security Update Guide, our one-stop site for information about all security updates provided by Microsoft. This new version will provide a more intuitive user experience to help protect our customers regardless of what Microsoft products or...

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

Security researchers are a vital component of the cybersecurity ecosystem that safeguards every facet of digital life and commerce. The researchers who devote time to uncovering and reporting security issues before adversaries can exploit them have earned our collective respect and gratitude. The...

Updates to the Windows Insider Preview Bounty Program

Partnering with the research community is an important part of Microsoft’s holistic approach to defending against security threats. Bounty programs are one part of this partnership, designed to encourage and reward vulnerability research focused on the highest impact to customer security. The...

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...

IE の累積的な更新プログラムも確実に適用を!

企業内でご利用の端末に更新プログラムを適用される際、特に Windows Server 2012 R2 などのサーバー OS 環境で Internet Explorer IE の累積的...

2020 年 5 月のセキュリティ更新プログラム (月例)

2020 年 5 月 13 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 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...

[サイバーセキュリティ月間2020] マイクロソフト セキュリティパッチのきほん③

マイクロソフトでは、セキュリティ更新プログラムの適用を、よりシンプルに、より効率よくすることで、更新...

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,...

Announcing the Microsoft Identity Research Project Grant

We are excited to announce the Microsoft Identity Research Project Grant a new opportunity in partnership with the security community to help protect Microsoft customers. This project grant awards up to $75,000 USD for approved research proposals that improve the security of the Microsoft Identit...

Announcing the Microsoft Identity Research Project Grant

We are excited to announce the Microsoft Identity Research Project Grant a new opportunity in partnership with the security community to help protect Microsoft customers. This project grant awards up to $75,000 USD for approved research proposals that improve the security of the Microsoft Identit...

BlueHat Seattle videos are online!

Were you unable to attend BlueHat Seattle, or wanted to see a session again? We have good news. If you have been waiting for the videos from BlueHat Seattle last month, the wait is over. All videos which the presenter authorized to be recorded are now online and available to anyone...