In a Zerologon exploit, an attacker with access to a network takes advantage of a critical flaw in the Netlogon Remote Protocol (MS-NRPC) to impersonate any computer, including a domain controller (DC). This flaw is known as Zerologon—a vulnerability that can give attackers full control over a domain. What is…
Password spraying detection is a vital ability for all organizations. In a password spraying attack, the attacker attempts to gain unauthorized access by trying a few common or weak passwords across many accounts rather than targeting a single account with many passwords. The idea is to test several passwords, hoping…
The Digital Operational Resilience Act (DORA) is an incoming European Union (EU) legislative framework aimed at fortifying the operational resilience of digital systems within the financial sector. All finance entities that operate in or with the EU need to achieve DORA compliance by early 2025, as do information and communication…
Key findings An Application Consent attack, also known as an Illicit Consent Grant attack, is a type of phishing attack in which a malicious actor gains access to an application and then exploits permissions that have been granted to that app. Semperis researcher Adi Malyanker has discovered that under certain…
This article details a series of Semperis security research team discoveries that resulted in the ability to perform actions in Entra ID beyond expected authorization controls, based on analysis of the OAuth 2.0 scope (permissions). Our most concerning discovery involved the ability to add and remove users from privileged roles,…
My friends know I'm a movie buff. Being also a mixed martial enthusiast, one of my all-time favorites is Fight Club, based on Chuck Palahniuk's first novel. The story is about an identity crisis: rebelling against consumerism, trying to find truth and meaning in life, and becoming a "real" person…
Forest Druid is a free cyber attack path discovery tool for hybrid identity environments, such as Active Directory and Entra ID. Unlike traditional tools that map attack paths from the external perimeter inwards, Forest Druid focuses on protecting the most critical assets first. This method prioritizes identifying and securing Tier…
By now, we’re all familiar with the need for an “assume breach” mindset where ransomware and other cyber threats are concerned. To better understand the necessity and challenges of this approach, we partnered with international market research firm Censuswide to ask organizations about their experience with ransomware attacks. What we…