December 2019 security updates are available

We have released the December 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,...

2019 年 11 月のセキュリティ更新プログラム (月例)

2019 年 11 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...

Vulnerability hunting with Semmle QL: DOM XSS

In two previous blog posts part 1 and part 2, we talked about using Semmle QL in C and C++ codebases to find vulnerabilities such as integer overflow, path traversal, and those leading to memory corruption. In this post, we will explore applying Semmle QL to web security by hunting for one of­­­...

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...

Recognizing Security Researchers in 2019

Who’s going to be on the Most Valuable Security Researcher list at Black Hat USA 2019? We’re not announcing the names—yet—but this is how we’ll determine who’s there. How do we define the Most Valuable Security Researchers? The list at Black Hat will be the top tier of researchers based on not ju...

Announcing the Microsoft Dynamics 365 Bounty program

One of Microsoft’s many security investments to protect customers is in the partnerships we build with the external security research community. We are excited to announce the launch of theDynamics 365 Bounty program and welcome researchers to seek out and disclose any high impact vulnerabilities...

A proactive approach to more secure code

What if we could eliminate an entire class of vulnerabilities before they ever happened? Since 2004, the Microsoft Security Response Centre MSRC has triaged every reported Microsoft security vulnerability. From all that triage one astonishing fact sticks out: as Matt Miller discussed in his 2019...

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...

June 2019 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...

BlueHat Shanghai 2019: Amplifying the power of defensive partnerships around the world

Earlier this week BlueHat Shanghai brought together security researchers and hundreds of cybersecurity professionals from China and across Asia to explore the latest topics in cybersecurity research. Including presentations from Qihoo 360, Baidu, Alibaba and the Chinese Academy of Sciences, BlueH...

Announcing the Microsoft Azure DevOps Bounty program

The Microsoft Security Response Center MSRC is pleased to announce the launch of the Azure DevOps Bounty program, a program dedicated to providing rock-solid security for our DevOps customers. Starting January 17, 2019, we’re excited to offer rewards up to US$20,000 for eligible vulnerabilities i...

Windows Update の利用手順 – Windows 7 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...

BlueHat v18 Announced & Call for Papers Opens

We are back! Microsoft is excited to announce the next installment of the BlueHat Security Conference – BlueHat v18. We will be holding the event at Microsoft’s headquarter campus September 25-27, 2018. This year we are adding the option for workshops and networking on the first day prior to the...

Recognizing Q3 Top 5 Bounty Hunters

Throughout the year, security researchers submit some amazing work to us under the Microsoft Bug Bounty program. Starting this quarter, we want to give a shout out to and acknowledge the hard work and dedication of the following individuals and companies who have contributed to securing Microsoft...

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...

Inside the MSRC– The Monthly Security Update Releases

For the second in this series of blog entries we want to look into which vulnerability reports make it into the monthly release cadence. It may help to start with some history. In September 2003 we made a change from a release anytime approach to a mostly predictable, monthly release cadence...

Inside the MSRC – How we recognize our researchers

This is the first of a series of blog entries to give some insight into the Microsoft Security Response Center MSRC business and how we work with security researchers and vulnerability reports. The Microsoft Security Response Center actively recognizes those security researchers who help us to...

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...

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...

Clarifying the behavior of mandatory ASLR

Last week, the CERT/CC published an advisory describing some unexpected behavior they observed when enabling system-wide mandatory Address Space Layout Randomization ASLR using Windows Defender Exploit Guard WDEG and EMET on Windows 8 and above. In this blog post, we will explain the configuratio...

Windows Defender System Guard でシステムのセキュリティを強化し整合性を維持する

本記事は、Windows Security のブログ “Hardening the system and maintaining integrity with Windows Defender System Guard” 2017 年 10 月 23 日 米国...

August 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...

Eternal Champion Exploit Analysis

Recently, a group named the ShadowBrokers published several remote server exploits targeting various protocols on older versions of Windows. In this post we are going to look at the EternalChampion exploit in detail to see what vulnerabilities it exploited, how it exploited them, and how the late...

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...

June 2017 security update release

Microsoft releases additional updates for older platforms to protect against potential nation-state activity Today, as part of our regular Update Tuesday schedule, we have taken action to provide additional critical security updates to address vulnerabilities that are at heightened risk of...

Advanced Threat Analytics プレイブックを使って攻撃をシミュレーションし検出する方法

本記事は、Microsoft Advanced Threat Analytics Team のブログ “How to simulate and detect attacks with the Advanced Threat Analytics Playbook” 2017 年 2 月 23...

Announcing the new Bug Bounty Program for Office Insider Builds on Windows

We’ve engineered Office to be secure by design and continually invest in enhancing its security capabilities. In the spirit of maintaining a high security bar in Office, we’re launching the Bug Bounty Program for Office Insider Builds on Windows. The Office Bug Bounty Program complements our...

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...

Microsoft Bounty Programs Expansion – Azure and Project Spartan

Update 2/22/17: Removed Guest-to-Host DoS non-distributed, from a single guest from Hyper-V escape bounty list. I am excited to announce significant expansions to the Microsoft Bounty Programs. We are evolving the 'Online Services Bug Bounty, launching a new bounty for Project Spartan, and updati...

Doors Open for New Bounty Programs

As we announced last week, Microsoft is now offering $100,000 bounties for new exploitation techniques that can bypass our latest platform-wide defenses and up to $50,000 bonus bounties for defense ideas. We’re also offering from now until July 26 bounties of up to $11,000 for critical security...

From sixteen to methodical: Firas Fatnassi’s evolution as a security researcher

Firas has been interested in technology for as long as he can remember. Growing up in Tunisia, he was drawn to mobile phones, gaming consoles, and anything that hinted at how systems worked beneath the surface. But for a long time, security research did not feel accessible...

Evolving our approach to coordinated security research: In scope by default

Today at Black Hat Europe, I raised our commitment to customer security through our partnerships with the security research community...

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...

New MSRC Blog Site

We are excited to announce the release of the new Microsoft Security Response Center MSRC blog site. Please visit msrc.microsoft.com/blog/ starting February 9th, 2023, for all past and future MSRC blog content. In addition to the new URL, we have refreshed the site with a new look and improved si...

サイバーセキュリティ月間 2023

政府では、サイバーセキュリティに関する普及啓発強化のため、2 月 1 日から 3 月 18 日までを 「サイバーセキュ...

2023 年 1 月のセキュリティ更新プログラム (月例)

2023 年 1 月 10 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...

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,...

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...

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...

All Hands-on Deck: A Whole-of-Society Approach for Cybersecurity

The morning of June 9th, I was driving over the Golden Gate Bridge into San Francisco with my family. While crossing the bridge my children shared some facts about this modern engineering marvel. Each day, approx. 100,000 vehicles travel over the bridge deck, which weighs a staggering 150,000 ton...

Microsoft Mitigates Azure Site Recovery Vulnerabilities

Summary Summary Microsoft recently mitigated a set of vulnerabilities in Azure Site Recovery ASR and released fixes today, July 12, as part of our regular Update Tuesday cycle. These vulnerabilities affect all ASR on-premises customers using a VMware/Physical to Azure scenario and are fixed in th...

Service Fabric におけるLinux 上のコンテナ化されたワークロードからの特権昇格について

本ブログは、 Service Fabric Privilege Escalation from Containerized Workloads on Linux の抄訳版です。最新の情報は原文を参照してください。 協調的な脆弱性の公開...

Researcher Spotlight: Hector Peralta’s Evolution from Popcorn Server to the MSRC Leaderboards

“The bug bounty literally changed my life. Before this, I had nothing.” Coolest thing he purchased : His first vehicle! Best gift to give: Buying his nephew gaming accessories. Favorite Hacking Companion : His two cats. They’re always by his side when he is working late. Origin of his Hacker name...

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...

Disclosure of Vulnerability in Azure Automation Managed Identity Tokens

On December 10, 2021, Microsoft mitigated a vulnerability in the Azure Automation service. Azure Automation accounts that used Managed Identitiestokens for authorization and an Azure Sandbox for job runtime and execution were exposed. Microsoft has not detected evidence of misuse of tokens...

2022 年 1 月のセキュリティ更新プログラム (月例)

2022 年 1 月 11 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...

We’re Excited to Announce the Launch of Comms Hub!

We are excited to announce the launch of Comms Hub to the Researcher Portal submission experience! With this launch, security researchers will be able to streamline communication with MSRC case SPMs case managers, attach additional files, track case and bug bounty status all in the Researcher...

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...

Introducing Bounty Awards for Teams Desktop Client Security Research

Partnering with the security research community is an important part of Microsoft’s holistic approach to defending against security threats. As much of the world has shifted to working from home in the last year, Microsoft Teams has enabled people to stay connected, organized, and collaborate...