Threat Research
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LDAPNightmare Explained
- Eric Woodruff
- Jan 13, 2025
LDAPNightmare, recently published by SafeBreach Labs, is a proof-of-concept exploit of a known Windows Lightweight Directory Access Protocol (LDAP) denial-of-service vulnerability (CVE-2024-49113). What is LDAPNightmare, how dangerous is this exploit, and how can you detect and defend against it? What is LDAPNightmare? The December 2024 Windows update - published by…
A New App Consent Attack: Hidden Consent Grant
- Adi Malyanker | Security Researcher
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…
UnOAuthorized: Privilege Elevation Through Microsoft Applications
- Eric Woodruff
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,…
New Ransomware Statistics Reveal Increased Need for Active Directory Security and Resilience
- Mickey Bresman
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…
How to Defend Against SPN Scanning in Active Directory
- Daniel Petri | Senior Training Manager
Service Principal Name (SPN) scanning is a reconnaissance technique that attackers use in Active Directory environments. This method enables attackers to discover valuable services and associated accounts, which can be potential targets for further attacks such as Kerberoasting. Related reading: Protect Active Directory against Kerberoasting What is SPN scanning? Understanding…
Identity Attack Watch: AD Security News, June 2024
- Semperis Research Team
As cyberattacks targeting Active Directory continue to rise, AD security, identity, and IT teams face mounting pressure to monitor the evolving AD-focused threat landscape. To assist IT professionals in comprehending and preventing attacks that involve AD, the Semperis Research Team publishes a monthly roundup of recent cyberattacks and provides additional…
How to Defend Against a Password Spraying Attack
- Daniel Petri | Senior Training Manager
Active Directory remains a critical infrastructure component for managing network resources, login credentials, and user authentication. Yet its centrality makes it a prime target for cyberattacks. One such evolving cyberattack is password spraying, a threat that's gained in complexity in recent years. Password spraying attacks stand out due to their…
Identity Attack Watch: AD Security News, May 2024
- Semperis Research Team
As cyberattacks targeting Active Directory continue to rise, AD security, identity, and IT teams face mounting pressure to monitor the evolving AD-focused threat landscape. To assist IT professionals in comprehending and preventing attacks that involve AD, the Semperis Research Team publishes a monthly roundup of recent cyberattacks and provides additional…
