Windows Defender ATP has protections for USB and removable devices

Meet Jimmy. Jimmy is an employee in your company. He Does Things With Computers (official title). Last Wednesday, as Jimmy got out of his car after parking in the company-owned parking lot, he saw something on the ground. That something is a 512GB USB … Continue reading Windows Defender ATP has protections for USB and removable devices

Attack uses malicious InPage document and outdated VLC media player to give attackers backdoor access to targets

Our analysis of a targeted attack that used a language-specific word processor shows why its important to understand and protect against small-scale and localized attacks as well as broad-scale malware campaigns. The attack exploited a vulnerability in… Continue reading Attack uses malicious InPage document and outdated VLC media player to give attackers backdoor access to targets

Windows Defender Antivirus can now run in a sandbox

Windows Defender Antivirus has hit a new milestone: the built-in antivirus capabilities on Windows can now run within a sandbox. With this new development, Windows Defender Antivirus becomes the first complete antivirus solution to have this capability… Continue reading Windows Defender Antivirus can now run in a sandbox

Out of sight but not invisible: Defeating fileless malware with behavior monitoring, AMSI, and next-gen AV

Removing the need for files is the next progression of attacker techniques. While fileless techniques used to be employed almost exclusively in sophisticated cyberattacks, they are now becoming widespread in common malware, too.
The post Out of sight b… Continue reading Out of sight but not invisible: Defeating fileless malware with behavior monitoring, AMSI, and next-gen AV

Protecting the modern workplace from a wide range of undesirable software

Security is a fundamental component of the trusted and productive Windows experience that we deliver to customers through modern platforms like Windows 10 and Windows 10 in S mode. As we build intelligent security technologies that protect the modern w… Continue reading Protecting the modern workplace from a wide range of undesirable software

Attack inception: Compromised supply chain within a supply chain poses new risks

A new software supply chain attack unearthed by Windows Defender Advanced Threat Protection (Windows Defender ATP) emerged as an unusual multi-tier case. Unknown attackers compromised the shared infrastructure in place between the vendor of a PDF edito… Continue reading Attack inception: Compromised supply chain within a supply chain poses new risks

March-April 2018 test results: More insights into industry AV tests

In a previous post, in the spirit of our commitment to delivering industry-leading protection, customer choice, and transparency on the quality of our solutions, we shared insights and context into the results of AV-TESTs January-February 2018 test cyc… Continue reading March-April 2018 test results: More insights into industry AV tests

Machine learning vs. social engineering

Machine learning is a key driver in the constant evolution of security technologies at Microsoft. Machine learning allows Microsoft 365 to scale next-gen protection capabilities and enhance cloud-based, real-time blocking of new and unknown threats. Ju… Continue reading Machine learning vs. social engineering

Hunting down Dofoil with Windows Defender ATP

Dofoil is a sophisticated threat that attempted to install coin miner malware on hundreds of thousands of computers in March, 2018. In previous blog posts we detailed how behavior monitoring and machine learning in Windows Defender AV protected custome… Continue reading Hunting down Dofoil with Windows Defender ATP

Why Windows Defender Antivirus is the most deployed in the enterprise

Statistics about the success and sophistication of malware can be daunting. The following figure is no different: Approximately 96% of all malware is polymorphic meaning that it is only experienced by a single user and device before it is replaced wit… Continue reading Why Windows Defender Antivirus is the most deployed in the enterprise