Microsoft の調査 – 検証済みの発行者確認を悪用する脅威アクターの同意フィッシング キャンペーンについて

本ブログは、Microsoft Investigation – Threat actor consent phishing campaign abusing the verified publisher process の抄訳版です。最新の情報は原文を参照してくださ...

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,...

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...

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...

On-Premises Servers Products are Here! Introducing the Applications and On-Premises Servers Bug Bounty Program

Microsoft is excited to announce the addition of Exchange on-premises, SharePoint on-premises, and Skype for Business on-premises to the Applications and On-Premises Servers Bounty Program. Through this expanded program, we encourage researchers to discover and report high-impact security...

Randomizing the KUSER_SHARED_DATA Structure on Windows

Windows 10 made a lot of improvements in Kernel Address Space Layout Randomization KASLR that increases the cost of exploitation, particularly for remote code execution exploits. Many kernel virtual address space VAS locations including kernel stacks, pools, system PTEs etc. are randomized. A...

Randomizing the KUSER_SHARED_DATA Structure on Windows

Windows 10 made a lot of improvements in Kernel Address Space Layout Randomization KASLR that increases the cost of exploitation, particularly for remote code execution exploits. Many kernel virtual address space VAS locations including kernel stacks, pools, system PTEs etc. are randomized. A...

Building Faster AMD64 Memset Routines

Over the past several years, Microsoft has rolled out several changes that result in more memory being zeroed. These mitigations include: The InitAll mitigation which zeros most stack variables Switching most Microsoft kernel code over to the ExAllocatePool2/ExAllocatePool3 API’s which zero memor...

EnglishmansDentist Exploit Analysis

Introduction Introduction We are continuing our series of blog posts dissecting the exploits released by ShadowBrokers in April 2017. After the first two posts about the SMB exploits known as EternalChampion and EternalSynergy, we’ll move this time to analyze a different tool and we’ll focus on t...

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...

Introducing the Microsoft Defender Bounty Program

We are excited to announce the new Microsoft Defender Bounty Program with awards of up to $20,000 USD. The Microsoft Defender brand encompasses a variety of products and services designed to enhance the security of the Microsoft customer experience. The Microsoft Defender Bounty Program invites...

Hey Yara, find some vulnerabilities

Intro Finding vulnerabilities in software is no easy task by itself. Doing this at cloud scale is very challenging to perform manually, and we use tools to help us identify patterns or vulnerability signatures. Yara is one of those tools. Yara is a very popular tool with Blue teams, malware...

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

Summary 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 wi...

Azure Kubernetes Service (AKS) Threat Hunting

As more businesses shift away from running workloads on dedicated virtual machines to running them inside containers using workload orchestrators like Kubernetes, adversaries have become more interested in them as targets. Moreover, the benefits Kubernetes provides for managing workloads are also...

Publishing CBL-Mariner CVEs on the Security Update Guide CVRF API

Microsoft is pleased to announce that beginning January 11, 2023, we will publish CBL-Mariner CVEs in the Security Update Guide SUG Common Vulnerability Reporting Framework CVRF API. CBL-Mariner is a Linux distribution built by Microsoft to power Azure’s cloud and edge products and services and i...

Microsoft Mitigates Vulnerability in Jupyter Notebooks for Azure Cosmos DB

Summary 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 th...

Hunting for Cobalt Strike: Mining and plotting for fun and profit

Introduction Cobalt Strike is a commercial Command and Control framework built by Helpsystems. You can find out more about Cobalt Strike on the MITRE ATT&CK page. But it can also be used by real adversaries. In this post we describe how to use RiskIQ and other Microsoft technologies to see if you...

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...

Security Update Guide Notification System News: Create your profile now

Sharing information through the Security Update Guide SUG is an important part of our ongoing effort to help customers manage security risks and keep systems protected. In January 2022 we introduced Phase One of a new way for customers to receive email notifications about new Microsoft product...

Anatomy of a Cloud-Service Security Update

Our security teams around the world focus on identifying and mitigating security issues as soon as possible while minimizing customer disruption. One of the challenges of a traditional security update is ensuring customers apply the protections promptly. We recently discussed the work that goes...

On-Premises Servers Products are Here! Introducing the Applications and On-Premises Servers Bug Bounty Program

Microsoft is excited to announce the addition of Exchange on-premises, SharePoint on-premises, and Skype for Business on-premises to the Applications and On-Premises Servers Bounty Program. Through this expanded program, we encourage researchers to discover and report high-impact security...

2022 年 2 月のセキュリティ更新プログラム (月例)

2022 年 2 月 8 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 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...

Power Platform is Here! Introducing the Dynamics 365 and Power Platform Bug Bounty Program

Microsoft is excited to announce the addition of Power Platform to the newly rebranded Dynamics 365 and Power Platform Bounty Program. Through this expanded program, we encourage researchers to discover and report high impact security vulnerabilities they may find in the new Power Platform scope ...

Microsoft ファミリーセーフティで家族の安全を見守ろう

～家庭で利用する PC・タブレットの設定ガイド～ ご家庭で PC やタブレットの安全な使い方を話し合いながら設...

What to Expect When Reporting Vulnerabilities to Microsoft

At the Microsoft Security Response Center’s MSRC, our primary mission is to help protect our customers. One of the ways we do this is by working with security researchers to discover security vulnerabilities in our services and products, and then making sure those that pose a threat to customers...

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...

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...

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...

SHA-1 ウェブサーバー証明書は警告！ウェブサイト管理者は影響の最終確認を

こんにちは、村木ゆりかです。 以前よりマイクロソフト セキュリティ アドバイザリ 2880823、そして、このブログでもご案内しているとおり、証明書に利用されているハッシュ アルゴリズム SHA-1 の安全性の低下に伴い、利用廃止が進められています。 マイクロソフトでは、2017 年 2 月 14 日 米国時間 2017 年中旬 2017 日 5 月 9 日 米国時間 より、SHA-1 の TLS サーバー証明書を利用するウェブサイトを、Microsoft Edge および Internet Explorer 11...

MS15-011 & MS15-014: Hardening Group Policy

Today we are releasing MS15-011 & MS15-014 which harden group policy and address network access vulnerabilities that can be used to achieve remote code execution RCE in domain networks. The MS15-014 update addresses an issue in Group Policy update which can be used to disable client-side global S...

A note on this month's Patch Tuesday

Each Patch Tuesday looks a little different. Some months are quieter, others are larger. This month's release sits on the larger side of a hotpatch month, and we expect releases to continue trending larger for some time. Every update reflects investments we have made across the development...

Securing AI and Cloud with the Zero Day Quest

Our security teams work around the clock to help protect every person and organization on the planet from security threats. We also know that security is a team sport, and that’s why we also partner with the global security community through our bug bounty programs to proactively identify and...

From Indiana Jones to Cybersecurity: The Inspiring Journey of Devin

As a young boy, Devin found himself captivated by the adventures of Indiana Jones, the whip-wielding archaeologist from the VHS movies his grandfather showed him. The thrill of unearthing history and the allure of the unknown ignited a spark in Devin, leading him to dream of becoming an...

New Security Advisory Tab Added to the Microsoft Security Update Guide

Today, we are adding a new Security Advisory tab to the Security Update Guide to meet our customers’ needs for a unified and authoritative source for the latest public information about Microsoft security updates and issues. We are continuously listening to feedback from users of the Security...

Microsoft Mitigates Three Vulnerabilities in Azure HDInsight

Summary Summary Microsoft recently remediated one Denial of Service and two Escalation of Privilege vulnerabilities affecting third party components of Azure HDInsight. Access to the target cluster as an authenticated user was a prerequisite for exploitation in all three cases. A successful...

Introducing the Microsoft AI Bug Bounty Program featuring the AI-powered Bing experience

Today at BlueHat we announced the new Microsoft AI bug bounty program with awards up to $15,000. This new bounty program features the AI-powered Bing experience as the first in scope product. The following products and integrations are eligible for bounty awards: AI-powered Bing experiences on...

2023 年 5 月のセキュリティ更新プログラム (月例)

2023 年 5 月 9 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...

マイクロソフト 機械学習 メンバーシップ推論コンペティション (MICO) の発表

本ブログは、Announcing the Microsoft Machine Learning Membership Inference Competition MICOの抄訳版です。最新の情報は原文を参照してく...

2022 年 11 月のセキュリティ更新プログラム (月例)

2022 年 11 月 8 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...

Vulnerability Fixed in Azure Synapse Spark

Summary Microsoft takes a proactive approach to continually probe our defenses, hunt for vulnerabilities, and seek new, innovative ways to protect our customers. Security researchers are an important part of this effort, and our collaborative partnership is critical in a world where cybersecurity...

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...

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...

Vulnerability Descriptions in the New Version of the Security Update Guide

With the launch of the new version of the Security Update Guide, Microsoft is demonstrating its commitment to industry standards by describing the vulnerabilities with the Common Vulnerability Scoring System CVSS. This is a precise method that describes the vulnerability with attributes such as t...

ラピッド サイバー攻撃の一種、Petya の概要

本記事は、Microsoft Secure ブログ “Overview of Petya, a rapid cyberattack” 2018 年 2 月 5 日 米...

Windows Defender Advanced Threat Protection の機械学習: 未知の侵入アクティビティの検出

本記事は、Windows Security のブログ “Windows Defender ATP machine learning: Detecting new and unusual breach activity” 2017 年 8 月 3 日 米...

Assessing Risk for the October 2014 Security Updates

Today we released eight security bulletins addressing 24 unique CVE’s. Three bulletins have a maximum severity rating of Critical, and five have a maximum severity rating of Important. This table is designed to help you prioritize the deployment of updates appropriately for your environment...

Software Defense: mitigating heap corruption vulnerabilities

Heap corruption vulnerabilities are the most common type of vulnerability that Microsoft addresses through security updates today. These vulnerabilities typically occur as a result of programming mistakes that make it possible to write beyond the bounds of a heap buffer a spatial issue or to plac...

Assessing risk for the August 2013 security updates

Today we released eight security bulletins addressing 23 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...

EMET 4.0 now available for download

We are pleased to announce that the final release of version 4.0 of the Enhanced Mitigation Experience Toolkit , best known as EMET, is now finally available for download. You can download it from http://www.microsoft.com/en-us/download/details.aspx?id=39273. We already mentioned some of the new...