On Monday May 30, 2022, Microsoft issued CVE-2022-30190 regarding the Microsoft Support Diagnostic Tool (MSDT) in Windows vulnerability.

CVE-2022-26925 : Microsoft a corrigé une faille de sécurité zero-day qui touche toutes les versions de Windows et qui permet une attaque par relais NTLM.

Microsoft coined the term “human-operated ransomware” to clearly define a class of attack driven by expert humane intelligence at every step of the attack chain and culminate in intentional business disruption and extortion. In this blog, we explain the ransomware-as-a-service affiliate model and disambiguate between the attacker tools and the various threat actors at play during a security incident.

Faster, easier and more secure sign-ins will be available to consumers across leading devices and platforms  Mountain View, California, MAY 5, 2022  – In a joint effort to make the web […]

Microsoft has discovered several vulnerabilities, collectively referred to as Nimbuspwn, that could be chained together, allowing an attacker to elevate privileges to root on many Linux desktop endpoints. Leveraging Nimbuspwn as a vector for root access could allow attackers to achieve greater impact on vulnerable devices by deploying payloads and performing other malicious actions via arbitrary root code execution.

In this two-part blog series, we expose a modern malware infrastructure and provide guidance for protecting against the wide range of threats it enables. Part 1 covers the evolution of the threat, how it spreads, and how it impacts organizations. Part 2 is a deep dive on the attacker behavior and will provide investigation guidance.

The activity we have observed has been attributed to a threat group that Microsoft tracks as DEV-0537, also known as LAPSUS$. DEV-0537 is known for using a pure extortion and destruction model without deploying ransomware payloads.

The Lapsus$ hacking group claims to have leaked the source code for Bing, Cortana, and other projects stolen from Microsoft's internal Azure DevOps server.

New Malware Capable of Controlling Social Media Accounts Infects 5,000+ Machines and is actively being Distributed via Gaming Applications on Microsoft’s Official Store

On December 14, 2021, during the Log4Shell chaos, Microsoft published CVE-2021-43893, a remote privelege escalation vulnerability affecting Windows EFS.

Recently, there has been a resurgence of malware that is spread via Microsoft Word macro capabilities....

Changing Default Behavior We’re introducing a default change for five Office apps that run macros: VBA macros obtained from the internet will now be blocked by default.

Threat actors evade detection by adopting the Sliver command-and-control (C2) framework in intrusion campaigns.

Microsoft security researchers have discovered a post-compromise capability we’re calling MagicWeb, which is used by a threat actor we track as NOBELIUM to maintain persistent access to compromised environments.

The Microsoft Threat Intelligence Center (MSTIC) has observed and taken actions to disrupt campaigns launched by SEABORGIUM in campaigns involve persistent phishing and credential theft campaigns leading to intrusions and data theft.

A ThreatLabz technical analysis of the latest variant of proxy-based AiTM attacks that are phishing enterprise users for their Microsoft credentials.

911[.]re, a proxy service that since 2015 has sold access to hundreds of thousands of Microsoft Windows computers daily, announced this week that it is shutting down in the wake of a data breach that destroyed key components of its…

MSTIC and MSRC disclose technical details of a private-sector offensive actor (PSOA) tracked as KNOTWEED using multiple Windows and Adobe 0-day exploits, including one for the recently patched CVE-2022-22047, in limited and targeted attacks against European and Central American customers.

A group of actors originating from North Korea that MSTIC tracks as DEV-0530 has been developing and using ransomware in attacks since June 2021. This group, which calls itself H0lyGh0st, utilizes a ransomware payload with the same name.

A large-scale phishing campaign that attempted to target over 10,000 organizations since September 2021 used adversary-in-the-middle (AiTM) phishing sites to steal passwords, hijack a user’s sign-in session, and skip the authentication process, even if the user had enabled multifactor authentication (MFA).

Campaign that steals email has targeted at least 10,000 organizations since September.

Microsoft uncovered a vulnerability in macOS that could allow specially crafted codes to escape the App Sandbox and run unrestricted on the system. We shared these findings with Apple, and fix for this vulnerability, now identified as CVE-2022-26706, was included in the security updates on May 16, 2022.

Leading cybersecurity experts and foreign policy scholars raise serious questions and concerns about Microsoft's report on the Ukraine war.

Microsoft says that a recently spotted Windows worm has been found on the networks of hundreds of organizations from various industry sectors.

In early 2022, we investigated an IIS backdoor called SessionManager. It has been used against NGOs, government, military and industrial organizations in Africa, South America, Asia, Europe, Russia and the Middle East.

The National Security Agency (NSA) and partner cybersecurity authorities released a Cybersecurity Information Sheet today recommending that Microsoft Windows® operators and administrators properly

7-zip has finally added support for the long-requested 'Mark-of-the-Web' Windows security feature, providing better protection from malicious downloaded files.

This report represents research conducted by Microsoft’s threat intelligence and data science teams with the goal of sharpening our understanding of the threat landscape in the ongoing war in Ukraine. The report also offers a series of lessons and conclusions resulting from the data gathered and analyzed. Notably, the report reveals new information about Russian efforts including an increase in network penetration and espionage activities amongst allied governments, non-profits and other organizations outside Ukraine. This report also unveils detail about sophisticated and widespread Russian foreign influence operations being used among other things, to undermine Western unity and bolster their war efforts. We are seeing these foreign influence operations enacted in force in a coordinated fashion along with the full range of cyber destructive and espionage campaigns. Finally, the report calls for a coordinated and comprehensive strategy to strengthen collective defenses – a task that will require the private sector, public sector, nonprofits and civil society to come together. The foreword of this new report, written by Microsoft President and Vice Chair Brad Smith, offers additional detail below.

Fraudsters who target LinkedIn users in sophisticated investment schemes pose a "significant threat" to the platform, the FBI tells CNBC.

On Monday May 30, 2022, Microsoft issued CVE-2022-30190 regarding the Microsoft Support Diagnostic Tool (MSDT) in Windows vulnerability.