Skip to main content

Month Archives: July 2017

Announcing the Windows Bounty Program

Wednesday, July 26, 2017

Windows 10 represents the best and newest in our strong commitment to security with world-class mitigations. One of Microsoft’s longstanding strategies toward improving software security involves investing in defensive technologies that make it difficult and costly for attackers to find, exploit and leverage vulnerabilities. We built in mitigations and defenses such as DEP, ASLR, CFG, CIG, ACG, Device Guard, and Credential Guard to harden our systems and we continue adding defenses such as Windows Defender Application Guard to significantly increase protection to harden entry points while ensuring the customer experience is seamless.

EnglishmansDentist Exploit Analysis

Thursday, July 20, 2017

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 the exploit named EnglishmansDentist designed to target Exchange Server 2003.

Eternal Synergy Exploit Analysis

Thursday, July 13, 2017

Introduction Recently we announced a series of blog posts dissecting the exploits released by the ShadowBrokers in April 2017; specifically some of the less explored exploits. This week we are going to take a look at Eternal Synergy, an SMBv1 authenticated exploit. This one is particularly interesting because many of the exploitation steps are purely packet-based, as opposed to local shellcode execution.

[IT 管理者向け] TLS 1.2 への移行を推奨しています

Tuesday, July 11, 2017


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 1.1 deprecation

July 2017 security update release

Tuesday, July 11, 2017

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 month’s security updates can be found on the Security Update Guide.