top of page
Search


Ransomware attacks targeted at weekends and holidays
Most ransomware attacks occur during weekends and holidays, times of distraction or disruption when the majority of SOCs are not adequately staffed. A new report from Semperis finds that 52 percent of surveyed organizations in the US, UK, France, Germany, Italy, Spain, Singapore, Canada, Australia and New Zealand were targeted at holidays or weekends. Alarmingly, 78 percent of companies cut security operation centre (SOC) staffing by 50 percent or more during holidays and w
Nov 23, 2025


New Attack Combines Ghost SPNs and Kerberos Reflection to Elevate Privileges on SMB Servers
A sophisticated privilege escalation vulnerability in Windows SMB servers, leveraging Ghost Service Principal Names (SPNs) and Kerberos authentication reflection to achieve remote SYSTEM-level access. Microsoft designated this as CVE-2025-58726 , an “SMB Server Elevation of Privilege” flaw impacting all Windows versions absent enforced SMB signing. According to Semperis, the issue persists in environments with default Active Directory (AD) configurations, underscoring Kerber
Oct 29, 2025


Forbes: ‘Midnight In The War Room’ And The Unsung Heroes Of Cybersecurity
If you ask Dr. Chase Cunningham whether we’re in a cyber war, he won’t hedge.“We’ve already had our cyber Pearl Harbor,” he told me. “It just didn’t happen in a single day.” That line lingered with me because it’s not hyperbole. Cunningham, one of the featured voices in Midnight in the War Room , knows what he’s talking about. The new documentary—produced by Semperis —offers an unfiltered look at the modern cyber battlefield and the people trying to hold the line. It’s raw,
Oct 15, 2025


Semperis unveils Ready1 to boost identity crisis recovery
Semperis has introduced Ready1 for Identity Crisis Management to support organisations in recovering from identity-based cyberattacks and resuming normal business operations. Ready1 brings together several of Semperis' existing offerings, including Active Directory Forest Recovery (ADFR), Disaster Recovery for Entra Tenant (DRET), and Identity Forensics and Incident Response (IFIR), alongside its enterprise crisis management system. The new product is aimed at enhancing opera
Oct 8, 2025


Cohesity Partners with Semperis on Active Directory
Cohesity and Semperis Announce Groundbreaking Offering that Unifies Data and Identity Resilience Cohesity and Semperis today announced a new product, Cohesity Identity Resilience, powered by Semperis, to defend enterprises’ critical Identity infrastructure, including Microsoft Active Directory assets from cyberattacks. Now available for purchase from Cohesity, the solution is the strongest of its kind in the market, enabling companies to proactively harden defenses, recover r
Sep 16, 2025


Ransomware Attacks Escalate to Physical Threats Against Executives
Ransomware actors are resorting to extreme measures to pressure victims into paying demands, including threats of physical harm to...
Jul 30, 2025


nOAuth Vulnerability Still Affects 9% of Microsoft Entra SaaS Apps Two Years After Discovery
New research has uncovered continued risk from a known security weakness in Microsoft's Entra ID , potentially enabling malicious actors...
Jun 24, 2025


Semperis adds detection for dMSA attacks in Windows Server
S emperis has announced new detection capabilities in its Directory Services Protector platform in collaboration with Akamai to address...
Jun 9, 2025


Semperis Named Ransomware Protection Business of the Year by Australian Cyber Awards
“Semperis is honored to be recognised as the Ransomware Protection Business of the Year, particularly among such an esteemed group of...
May 15, 2025


Enterprises struggle with serious gaps in cyber response plans
A new survey of 1,000 businesses across the UK, UK, Europe and the Asia-Pacific region reveals a worrying disconnect between...
May 13, 2025


Semperis Is Now a Preferred Vendor on the California SLP
Today, identity-related attacks—which target critical identity systems such as Microsoft Active Directory (AD), Entra ID, and...
Apr 17, 2025


Water and Electricity Companies Suffer Severe Damage from Cyber-Attacks
80 percent of operators were targeted multiple times. More than half of cyber-attacks experienced by critical services disrupted...
Apr 4, 2025


Semperis in The 2025 Security 100
Our list includes established industry giants alongside fast-growing startups that are shaking up the market with the help of partners....
Feb 17, 2025


Semperis achieves ARR milestone with USD $100 million mark
Semperis has announced its achievement of surpassing USD $100 million in annual recurring revenue (ARR), a milestone reached by fewer...
Jan 30, 2025


Cybercriminals hope to catch public sector off-guard
Organizations are leaving their security teams understaffed during critical times, shows research. As cyberattacks continue to plague...
Jan 1, 2025


Five Eyes backs Semperis' Purple Knight for Active Directory defense
"The Five Eyes' comprehensive report on mitigating Active Directory risks highlights the urgent need to secure hybrid identity systems...
Nov 12, 2024


Semperis Named One of Dun’s 100 Best Tech Companies to Work for in 2024
Semperis , a pioneer in identity-driven cyber resilience, today announced it has been included in Dun’s 100 Best Tech Companies to Work...
Nov 6, 2024


“UnOAuthorized” Microsoft Entra ID (Azure AD) Vulnerability Let Attackers Gain Global Admin Access
According to the research team at Semperis, the vulnerability was discovered in the OAuth 2.0 scope (permissions) of Entra ID, which...
Aug 8, 2024


Some companies pay ransomware attackers multiple times, survey finds
Nearly one-third of companies that suffered a ransomware attack paid a ransom four or more times in the past 12 months to regain access...
Jul 30, 2024


Semperis, a specialist in Active Directory security now worth more than $1B, raises $125M
Active Directory, the Microsoft directory service for connecting users with network resources, is used by more than 90% of all Fortune...
Jun 19, 2024
bottom of page
