Black Cat Security

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 presentation at BlueHat IL, the majority of vulnerabilities fixed and with a CVE assigned are caused by developers inadvertently inserting memory corruption bugs into their C and C++ code.

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.

Inside the MSRC – Building your own security incident response process

This is the third and last in a series of posts that looks at how Microsoft responds to elevated threats to customers through the Microsoft Security Response Center’s (MSRC) Software and Services Incident Response Plan (SSIRP). Our previous posts discussed how Microsoft protects customers against elevated threats and the anatomy of a SSIRP incident.

Inside the MSRC – Anatomy of a SSIRP incident

This is the second in a series of blog posts that shares how the MSRC responds to elevated threats to customers through the Software and Services Incident Response Plan (SSIRP).
In ourlast blog post, we looked at the history of the Microsoft Security Response Center and SSIRP, and how Microsoft takes a holistic view to helping to protect and defend customers.

Inside the MSRC – Customer-centric incident response

The Microsoft Security Response Center (MSRC) is an integral part of Microsoft’s Cyber Defense Operations Center (CDOC) that brings together security response experts from across the company to help protect, detect, and respond to threats in real-time. Staffed with dedicated teams 24×7, the CDOC has direct access to thousands of security professionals, data scientists, and product engineers throughout Microsoft to ensure rapid response and resolution to security threats.

Prevent the impact of a Linux worm by updating Exim (CVE-2019-10149)

This week, MSRC confirmed the presence of an active Linux worm leveraging a critical Remote Code Execution (RCE) vulnerability, CVE-2019-10149, in Linux Exim email servers running Exim version 4.87 to 4.91. Microsoft Azure infrastructure and Services are not affected; only customer’s Linux IaaS instances running a vulnerable version of Exim are affected.

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.