Citrix Patches Actively Exploited NetScaler ADC & NetScaler Gateway Vulnerabilities
Two critical zero-day vulnerabilities in Citrix NetScaler ADC (formerly Citrix ADC) and Citrix NetScaler Gateway (formerly Citrix Gateway) are under active exploitation and require immediate patching. The vulnerabilities are part of a batch of eight flaws detailed in a Citrix security bulletin issued on September 27, 2026. Six of the vulnerabilities are rated high severity, with CVSS v4.0 severity scores between 7.0 and 8.8. The critical flaws have a CVSS base score of 9.5. CVE-2026-88771 is a critical remote code execution vulnerability due to improper input validation. Successful exploitation can allow an attacker to execute arbitrary commands. The vulnerability affects all Citrix NetScaler ADC and Citrix NetScaler Gateway deployments. CVE-2026-88772 is a critical memory overflow vulnerability that can lead to remote code execution or denial of service. The vulnerability is present if DTLS configuration is enabled on NetScaler ADC or NetScaler Gateway. It is enabled by default on VPN vServer. The six remaining vulnerabilities are as follows: CVE-2026-88775; CVE-2026-88776 &...
Astrana Health Notifies SEC About Social Engineering Incident
Astrana Health, a managed services organization that helps healthcare providers deliver value-based, coordinated care to patients, has notified the U.S. Securities and Exchange Commission (SEC) about a material cybersecurity incident that exposed patient, employee, and provider information. According to the Form 8-K filing, Astrana Health subsidiary Astrana Health Management identified unusual activity within its information technology environment. The forensic investigation found that threat actors had conducted a series of social engineering attempts against employees. The threat actors impersonated company personnel and spoofed the company’s main telephone number and tricked employees into providing them with access to company systems. The company engaged a third-party cybersecurity and digital forensics firm to assist with the investigation and notified law enforcement. Steps have been taken to bolster security to prevent similar incidents in the future, including resetting all affected credentials, restricting the use of remote access tools, restoring systems from clean...
OpenAI Agent Hacks Australian Medicare Portal
An artificial intelligence (AI) agent developed by OpenAI gained unauthorized access to an Australian Medicare statistics reporting service portal and obtained non-public data. The same AI agent also accessed three other government systems as part of its autonomous research activities: the web portals of the Australian Institute of Health and Welfare, the Victorian Department of Health, and the New South Wales Bureau of Crime Statistics and Research. An AI agent is an autonomous system that uses an AI model to plan, make decisions, and execute tasks to solve complex problems in response to a prompt from a user or different AI system. In this case, the AI agent was part of an internal model used by OpenAI’s research team for conducting internet-based research into healthcare spending. While attempting to compile health and medical statistics, the AI agent encountered certain blocks preventing access to data. While the AI agent had no authority to access non-public data, it successfully circumvented the blocks to access data in the Medicare statistics database and also wrote data to...
California Critical Access Hospital Announces Cybersecurity Incident
Data breaches have been announced by Modoc Medical Center and Vista Del Mar Child and Family Services in California, Park Place Behavioral Healthcare in Florida, and Millstone Medical Outsourcing in Massachusetts. Modoc Medical Center Modoc Medical Center, a 12-bed critical access hospital and rural healthcare system based in Alturas, California, has identified unauthorized access to its computer network. The unauthorized access was detected on January 27, 2026, and cybersecurity specialists were engaged to help secure its systems and investigate and determine the nature and scope of the incident. The investigation confirmed that an unknown actor had access to parts of its computer network between January 19, 2026, and January 27, 2026, and downloaded certain files, some of which contained patients’ personal and protected health information. The review of the data has been completed, and notification letters are now being sent to the affected individuals. The data types involved varied from individual to individual and are detailed in the individual notification letters. The data...
Labcorp Settles Multistate Data Breach Investigation for $2.3 Million
A coalition of 44 state attorneys general has agreed to settle a multistate investigation of Laboratory Corporation of America (Labcorp) regarding a 2019 data breach at its debt collection company, American Medical Collection Agency (AMCA). Labcorp has agreed to pay $2,287,455, which will be divided among the 44 states participating in the action. AMCA is a subsidiary of the debt collection company Retrieval-Masters Creditors Bureau (RMCB) and provides small debt collection services to healthcare organizations, including laboratories and medical testing facilities. The hacking incident was identified by RMCB on March 19, 2029, and the forensic investigation determined that a hacker breached the AMCA network around 8 months before the intrusion was detected. The hacker had access to the network from August 1, 2018, until March 30, 2019, and exfiltrated sensitive data including names, personal information, Social Security numbers, financial information, medical test information, and diagnostic codes. The AMCA data breach was the largest data breach reported in 2019 by a...



