Latest news with #Semperis'
Techday NZ
6 days ago
- Business
- Techday NZ
Semperis warns nOAuth flaw in Entra ID risks SaaS accounts
Semperis has published new research highlighting the ongoing risk posed by the nOAuth vulnerability in Microsoft's Entra ID, which may allow attackers to take over SaaS application accounts with minimal effort. According to the research, nOAuth remains undetected by many SaaS vendors and is very difficult for enterprise customers to defend against. The vulnerability, originally disclosed in 2023 by Omer Cohen of Descope, arises due to a flaw in how certain SaaS applications implement OpenID Connect, particularly when unverified email claims can be used as user identifiers in Entra ID app configurations. This practice contrasts with recommended OpenID Connect standards. Semperis' follow-up investigation examined applications listed in Microsoft's Entra Application Gallery, finding that over a year after its initial disclosure, a substantial portion of applications remain vulnerable to nOAuth abuse. Risk to enterprises The core issue with nOAuth is that attackers require only their own Entra tenant and the email address of a target user to potentially gain full access to that person's account in a vulnerable SaaS application. Traditional defences, including Multi-Factor Authentication (MFA), conditional access, and Zero Trust policies, do not mitigate this risk. This presents a challenge for both developers and end-users. As Eric Woodruff, Chief Identity Architect at Semperis, explained, "It's easy for well-meaning developers to follow insecure patterns without realising it and in many cases, they don't even know what to look for. Meanwhile, customers are left with no way to detect or stop the attack, making this an especially dangerous and persistent threat." Through comprehensive testing of more than 100 Entra-integrated SaaS applications, Semperis identified that nearly 10% were susceptible to nOAuth exploitation. Once access is obtained via this vulnerability, attackers may exfiltrate data, maintain persistence, and potentially move laterally within the victim organisation's environment. Detection and mitigation challenges Detection of nOAuth abuse is exceptionally difficult, as successful attacks leave minimal traces within standard user activity logs. Deep correlation across both Entra ID and individual SaaS platform logs is required to identify potential breaches. Semperis' research indicates that exploitation continues to be possible, despite the initial public disclosure and vendor recommendations. Highlighting the severity of the nOAuth issue, Woodruff added, "nOAuth abuse is a serious threat that many organisations may be exposed to. It's low effort, leaves almost no trace and bypasses end-user protections. We've confirmed exploitation is still possible in many SaaS apps, which makes this an urgent call to action. We encourage developers to implement the necessary fixes and help protect their customers before this flaw is exploited further." Semperis has communicated its findings to both affected SaaS vendors and Microsoft, beginning in December 2024. Some vendors have taken steps to address the issue, while others reportedly remain vulnerable. Industry response and recommendations The Microsoft Security Response Centre (MSRC) advises SaaS application vendors to implement its security recommendations regarding user identification and OpenID Connect integration. Firms failing to comply may risk removal from the Entra Application Gallery. Semperis continues to focus on identity threat detection, with recent announcements regarding new detection features addressing other critical vulnerabilities such as BadSuccessor and Silver SAML. These findings exemplify ongoing risks within enterprise identity services, where configuration weaknesses in authentication protocols can present significant challenges for both software providers and their customers. The nOAuth vulnerability underlines the importance of not only secure development practices but also continuous monitoring as enterprise reliance on SaaS and identity federation increases. Semperis' report calls for prompt action from SaaS vendors to update their authentication implementations to address this persistent risk.
Techday NZ
09-06-2025
- Business
- Techday NZ
Semperis adds detection for dMSA attacks in Windows Server
Semperis has announced new detection capabilities in its Directory Services Protector platform in collaboration with Akamai to address the "BadSuccessor" privilege escalation technique in Windows Server 2025. BadSuccessor targets a new Windows Server 2025 feature called delegated Managed Service Accounts (dMSAs), which was designed to improve service account security. Researchers at Akamai have shown that attackers can exploit dMSAs to impersonate highly privileged users, such as Domain Admins, within Active Directory. At present, there is no patch available to address this vulnerability. Service accounts, including dMSAs, often operate with extensive or unmonitored privileges, creating potential security risks for enterprises. The exploitation method uncovered by Akamai highlights ongoing challenges in securing service accounts and preventing unexpected attack vectors within large organisations. In response, Semperis has updated its Directory Services Protector platform to include one new Indicator of Exposure and three Indicators of Compromise aimed at detecting abnormal dMSA activity. These enhancements will enable security teams to identify excessive delegation rights, malicious connections between dMSAs and privileged user accounts, and attacks directed at sensitive accounts such as KRBTGT. "Semperis moved quickly to translate the vulnerability into real-world detection capabilities for defenders, demonstrating how collaboration between researchers and vendors can lead to rapid, meaningful impact. The abuse of service accounts is a growing concern, and this high-profile vulnerability is a wake-up call," said Yuval Gordon, Security Researcher at Akamai. "Service accounts remain one of the least governed yet most powerful assets in enterprise environments. This collaboration with Akamai allowed us to close detection gaps fast and give defenders visibility into a deeply complex area of Active Directory that attackers continue to exploit," said Tomer Nahum, Security Researcher at Semperis. The vulnerability is present in any organisation that operates at least one domain controller running Windows Server 2025. According to Semperis, a single misconfigured domain controller can place the entire environment at risk. Until vendors release an official patch, organisations are encouraged to audit dMSA permissions and use detection tools to monitor for misuse. Semperis is reinforcing cybersecurity for enterprises by protecting critical identity services that underpin hybrid and multi-cloud environments. Purpose-built for securing complex identity infrastructures — including Active Directory, Entra ID, and Okta — Semperis' AI-powered platform safeguards more than 100 million identities from cyberattacks, data breaches, and operational missteps. Headquartered in Hoboken, New Jersey, the privately held international company supports major global brands and government agencies, with customers spanning over 40 countries. Beyond its core technology offerings, Semperis is recognized for its commitment to the cybersecurity community. The company sponsors a range of industry resources, including the award-winning Hybrid Identity Protection (HIP) Conference, the HIP Podcast, and free identity security tools such as Purple Knight and Forest Druid. With its dual mission to protect digital infrastructure and empower the security community, Semperis continues to play a pivotal role in advancing global cyber resilience. Follow us on: Share on:
Yahoo
08-05-2025
- Business
- Yahoo
Identity Strategy: Semperis CEO Mickey Bresman, Live at RSAC 2025
Tech Edge hosted a fireside chat on April 30 at RSAC 2025 in San Francisco with Mickey Bresman, Chief Executive Officer at Semperis. The in-person interview was joined by Editor-at-Large Jarrett Banks and they discussed what's next for the company after recently surpassing $100M ARR, the evolution of Semperis' mission of putting identity at the center of cyber resilience strategy, among other topics. Watch the interview below: This embedded content is not available in your region. About Mickey Bresman Mickey Bresman is CEO and co-founder of Semperis, a leading provider of enterprise, hybrid identity protection, threat research, and incident response services. Among the top three fastest-growing cybersecurity companies in the U.S., according to Inc. 5000, Semperis is widely recognized for offering the industry's most comprehensive hybrid directory protection technology and services. Semperis recently surpassed $100M in annual recurring revenue, a milestone that fewer than one in every 1,000 venture-backed enterprise software companies achieves. The company has been recognized by Deloitte's Technology Fast 500, Inc's Best Workplaces, and, recently, CRN's 2025 Security 100 list. Its Purple Knight community tool, a free assessment solution designed to identify vulnerabilities in Microsoft Active Directory, Entra ID, and Okta, has been endorsed by leading cyber agencies from the Five Eyes Nation, including the NSA and CISA. Beginning his technical career in the Navy, Mickey's comfort zone is on the front lines helping organizations thwart and respond to cyberattacks. The long-time cybersecurity expert and entrepreneur has an extensive track record of driving revenue growth and scaling organizations across the globe. Prior to founding Semperis, Mickey held the position of CTO at YouCC Technologies, a Microsoft Gold Partner integration company. About Semperis For security teams charged with defending hybrid and multi-cloud environments, Semperis ensures the integrity and availability of critical enterprise directory services at every step in the cyber kill chain and cuts recovery time by 90%. Purpose-built for securing hybrid identity environments—including Active Directory, Entra ID, and Okta—Semperis' AI-powered technology protects over 100 million identities from cyberattacks, data breaches and operational errors. The world's leading organizations trust Semperis to spot directory vulnerabilities, intercept cyberattacks in progress and quickly recover from ransomware and other data integrity emergencies. Semperis is headquartered in Hoboken, New Jersey, and operates internationally, with its research and development team distributed throughout the United States, Canada and Israel. Semperis hosts the award-winning Hybrid Identity Protection conference and podcast series ( and built the community hybrid Active Directory cyber defender tools, Purple Knight ( and Forest Druid. The company has received the highest level of industry accolades, recently named to Inc. Magazine's list of best workplaces for 2024 and ranked the fastest-growing cybersecurity company in America by the Financial Times. Contact: Exec Edge Editor@ Error in retrieving data Sign in to access your portfolio Error in retrieving data Error in retrieving data Error in retrieving data Error in retrieving data
