Advance Notification Service for the May 2014 Security Bulletin Release

Today we provide Advance Notification Service ANS for the release of eight bulletins, two rated Critical and six rated Important in severity. These updates will address vulnerabilities for .NET Framework, Office, Internet Explorer, and Windows. As we do every month, we’ve scheduled the security...

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...

Update (2/10) - Advance Notification Service for February 2014 Security Bulletin Release

Update as of February 10, 2014 We are adding two updates to the February release. There will be Critical-rated updates for Internet Explorer and VBScript in addition to the previously announced updates scheduled for release on February 11, 2014. These updates have completed testing and will be...

Assessing risk for the December 2013 security updates

Today we released eleven security bulletins addressing 24 CVE’s. Five bulletins have a maximum severity rating of Critical while the other six have a maximum severity rating of Important. We hope that the table below helps you prioritize the deployment of the updates appropriately for your...

MS13-098: Update to enhance the security of Authenticode

Today we released MS13-098, a security update that strengthens the Authenticode code-signing technology against attempts to modify a signed binary without invalidating the signature. This update addresses a specific instance of malicious binary modification that could allow a modified binary to...

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...

Software defense: safe unlinking and reference count hardening

Object lifetime management vulnerabilities represent a very common class of memory safety vulnerability. These vulnerabilities come in many shapes and sizes, and are typically quite difficult to mitigate generically. Vulnerabilities of this type result commonly from incorrect accounting with...

Microsoft Releases Security Advisory 2887505

Today we released Security Advisory 2887505 regarding an issue that affects Internet Explorer. There are only reports of a limited number of targeted attacks specifically directed at Internet Explorer 8 and 9, although the issue could potentially affect all supported versions. This issue could...

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

Today we’re publishing the September 2013 Security Bulletin Webcast Questions & Answers page. The majority of questions focused on Office bulletins, especially SharePoint Server MS13-067. We received multiple Office related questions that were very similar in nature, so the questions have been...

MS13-068: A difficult-to-exploit double free in Outlook

MS13-068 addresses a memory corruption vulnerability accessible by simply previewing a message in the Outlook Preview Pane. As such, we’ve rated this security vulnerability as Critical and we encourage customers to deploy the security update. However, in this case, we believe this particular...

Preparing for Live Pwnage: Mitigation Bypass Bounty Machine Specs for Black Hat

With about one week to go before we all gather at Black Hat in Las Vegas, we’re getting inquiries about precisely how the promised Live Mitigation Bypass Bounty judging at Black Hat will work. For most of the world, it works best when you get a good spot at the Microsoft booth 301 around noon eac...

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

Today we’re publishing the July 2013 Security Bulletin Webcast Questions & Answers page. During the webcast, we fielded 10 questions covering all updates. All questions are included on the Q&A page. We invite our customers to join us for the next scheduled webcast on Wednesday, August 14th at 11...

New Bounty Program Details

Today we announced the upcoming Mitigation Bypass Bounty, the BlueHat Bonus for Defense, and the Internet Explorer 11 Preview Bug Bounty program. It’s very exciting to finally take the wraps off of these initiatives and we are anticipating some great submissions from the security research...

New High Impact Scenarios and Awards for the Azure Bounty Program

Microsoft is excited to announce new Azure Bounty Program awards up to $60,000 to encourage and reward vulnerability research focused on the highest potential impact to customer security. These increased awards are a part of our ongoing investment in partnership with the security research...

セキュリティイベント　CODE BLUE でお会いしましょう

より安全で安心な製品やサービスを提供するために、マイクロソフトでは、マイクロソフトの製品やサービスに...

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...

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...

Congratulating Our Top MSRC 2021 Q1 Security Researchers!

We’re excited to announce the top contributing researchers for the 2021 First Quarter Q1! Congratulations to all the researchers recognized in this quarter’s leaderboard and thank you to everyone who continues to help secure our customers and the...

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...

サイバーセキュリティ月間期間の取り組みのおさらい

3 月 18 日に今年のサイバーセキュリティ月間が終わりました。この期間中、日本セキュリティチームは、Mic...

オンプレミス Exchange 緩和ツール (ワンクリックの緩和ツール)

「One-Click Microsoft Exchange On-Premises Mitigation Tool – March 2021」の日本語抄訳です。 最近のオンプレミスの Exchange Server を狙った攻撃に...

Microsoft Internal Solorigate Investigation - Final Update

We believe the Solorigate incident is an opportunity to work with the community, to share information, strengthen defenses and respond to attacks. We have now completed our internal investigation into the activity of the actor and want to share our findings, which confirm that we found no evidenc...

サイバーセキュリティ月間 2021

今年もサイバーセキュリティ月間 2 月 1 日～ 3 月 18 日 が始まりました。サイバーセキュリティ月間とは、内閣...

休暇中に被害に遭わないために ～お休み前のセキュリティ チェック～

日本では年末年始は多くの方が休暇になり、企業組織の業務はおやすみになります。しかしながら、サイバー犯...

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...

Security Update Guide: Let's keep the conversation going

Hi Folks, We want to continue to highlight changes we’ve made to our Security Update Guide. We have received a lot of feedback, much of which has been very positive. We acknowledge there have been some stability problems and we are actively working through reports of older browsers not being able...

Security Analysis of CHERI ISA

Is it possible to get to a state where memory safety issues would be deterministically mitigated? Our quest to mitigate memory corruption vulnerabilities led us to examine CHERI Capability Hardware Enhanced RISC Instructions, which provides memory protection features against many exploited...

Control Flow Guard for Clang/LLVM and Rust

As part of our ongoing efforts towards safer systems programming, we’re pleased to announce that Windows Control Flow Guard CFG support is now available in the Clang C/C++ compiler and Rust. What is Control Flow Guard? CFG is a platform security technology designed to enforce control flow...

Machine Learning Security Evasion Competition 2020 Invites Researchers to Defend and Attack

Machine learning ML is an increasingly valuable tool in cyber security as adversaries continually evolve their tactics and techniques to evade detection. As machine learning has advanced and sophisticated ML models have been developed to assist security professionals in protecting the cloud,...

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...

Access Misconfiguration for Customer Support Database

Today, we concluded an investigation into a misconfiguration of an internal customer support database used for Microsoft support case analytics. While the investigation found no malicious use, and although most customers did not have personally identifiable information exposed, we want to be...

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,...

[IT管理者向け] 脆弱性の悪用のしやすさを知る～悪用可能性指標と緩和策

マイクロソフトでは毎月第二火曜日 米国時間 に定例のセキュリティ更新プログラムを公開し、修正した脆弱...

Customer Guidance for the Dopplepaymer Ransomware

Microsoft has been investigating recent attacks by malicious actors using the Dopplepaymerransomware. There is misleading information circulating about Microsoft Teams, along with references to RDP BlueKeep, as ways in which this malware spreads. Our security research teams have investigated and...

Customer Guidance for the Dopplepaymer Ransomware

Microsoft has been investigating recent attacks by malicious actors using the Dopplepaymerransomware. There is misleading information circulating about Microsoft Teams, along with references to RDP BlueKeep, as ways in which this malware spreads. Our security research teams have investigated and...

Time for day 2 of briefings at BlueHat Seattle!

We hope you enjoyed the first day of our BlueHat briefings and the Bytes of BlueHat reception in our glamping tent complete with toasted marshmallows. Yesterday, we learned a lot about how XboxOne hardware security has advanced the state of hardware security elsewhere, we heard some surprising...

Welcome to the second stage of BlueHat!

We’ve finished two incredible days of security trainings at the Living Computer Museum in Seattle. Now it’s time for the second part of BlueHat: the briefings at ShowBox SoDo. We’ve got a big day planned, so head on down. Please join us for breakfast we have doughnuts! and bacon! and cereal!...

Announcing the Microsoft Edge Insider Bounty

This week, we released the first Beta preview of the next version of Microsoft Edge. Alongside this, Microsoft is excited to announce the launch of the Microsoft Edge Insider Bounty Program. We welcome researchers to seek out and disclose any high impact vulnerabilities they may find in the next...

Microsoft Announces Top Three Contributing Partners in the Microsoft Active Protections Program (MAPP)

Today Microsoft announced the MAPP program Top Vulnerability Contributors, Top Threat Indicator Submitters, and Top Zero-Day Reporting for the period of July 1, 2018 – June 30, 2019. The Microsoft Active Protections Program provides security and protection to customers through cooperation and...

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...

2019 年 6 月のセキュリティ更新プログラム (月例)

2019 年 6 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...

Vulnerability hunting with Semmle QL, part 2

The first part of this series introduced Semmle QL, and how the Microsoft Security Response Center MSRC are using it to investigate variants of vulnerabilities reported to us. This post discusses an example of how we’ve been using it proactively, covering a security audit of an Azure firmware...

Practical advice for earning higher Microsoft bounty awards

This year at the Nullcon International Security Conference I shared practical advice for how security researchers can maximize the impact of their security vulnerability submissions and earn higher bounty awards under the Microsoft Bounty Program. For those who couldn’t be there, I had two core...

2018 年 10 月のセキュリティ更新プログラム (月例)

2018 年 10 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...

Inside MSRC: Sharing Our Story & Customer Tips

For the last 20 years, the Microsoft Security Response Center has been an integral part of Microsoft’s commitment to customer security. We are often called on to talk about the work we do and how customers can apply the lessons we have learned over that period to better their security posture...

Microsoft launches Identity Bounty program

Modern security depends today on collaborative communication of identities and identity data within and across domains. A customer’s digital identity is often the key to accessing services and interacting across the internet. Microsoft has invested heavily in the security and privacy of both our...

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...