FlukeData DisclosureFluke Corporation Discloses Data BreachAffectingIndividualsClop Ransomware Claims Responsibility FlukeCorporationSSNsThe ClopFluke Corporation

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Questions about this signal

What happened in this signal?

Fluke Corporation notified over 18,000 individuals of a data breach that originally occurred in August 2025. The breach, which reportedly lasted two months, compromised highly sensitive personal information including Social Security Numbers (SSNs), birth dates, and self-identified disability status. The incident was attributed to an exploited vulnerability in a third-party application used by the company. The Clop ransomware group claimed responsibility for the breach, listing Fluke Corporation on its dark web leak site.

When was this signal reported?

Shadow Tier lists May 22, 2026 as the signal date.

Which organization is connected to this signal?

Fluke is the organization connected to this public signal.

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Which attack pattern is relevant?

This signal is connected to current ransomware incidents based on its reported incident context.

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Which impact area is relevant?

This signal is connected to data exposure and breach intelligence based on its reported consequences.

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Related signals

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XsolisJun 26, 2026

Same action patternSame impact area

Healthcare AI Company Xsolis Suffers Data Breach Impacting 1.4 Million Individuals

Healthcare technology company Xsolis, Inc. has disclosed a data breach affecting nearly 1.4 million individuals. Tennessee-based Xsolis provides utilization management and revenue cycle solutions for hospitals, health systems, and payers. The company published a data security notice in early June, revealing that unauthorized activity was detected on its systems on January 22. The intrusion resulted from a targeted phishing attack carried out two days earlier. According to Xsolis, the hackers gained access to files storing personal and protected health information received by the company from its clients, including names, dates of birth, addresses, SSNs, health insurance information, and medical treatment information. While the data breach was disclosed two weeks ago, the US Department of Health and Human Services (HHS) has now disclosed the number of affected individuals. The Xsolis cybersecurity incident was added to the HHS data breach tracker on Monday, with the number of affected individuals listed as 1,396,519. Advertisement. Scroll to continue reading. No known ransomware group appears to have taken credit for the attack on the healthcare tech company. SecurityWeek has asked Xsolis whether it was targeted in an extortion attempt and, if so, whether a ransom has been paid. The company’s disclosure indicates that it’s “not aware of any actual or attempted misuse of information because of this incident”. It’s not uncommon for healthcare-related data breaches to affect millions of people. One recent example is the incident involving the dental benefits administrator DentaQuest , in which hackers stole information from 2.6 million accounts. Related : Millions Impacted Across Several US Healthcare Data Breaches Related : 266,000 Affected by Data Breach at Radiology Associates of Richmond Related : Oncology Institute Discloses Data Breach Written By Eduard Kovacs Eduard Kovacs (@EduardKovacs) is senior managing editor at SecurityWeek. He worked as a high school IT teacher before starting a career in journalism in 2011. Eduard holds a bachelor’s degree in industrial informatics and a master’s degree in computer techniques applied in electrical engineering. 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CodeSecCon bridges the gap between dev and security. Discover best practices for secure coding, innovative risk-reduction tools, and safe AI integration to cultivate a true DevSecOps culture. Safely secure your apps! Xsolis breach exposes personal and health data of 1.4 million people Healthcare technology company Xsolis has disclosed a data breach impacting nearly 1.4 million individuals following a phishing attack. The Tennessee-based firm, which provides utilization management and revenue cycle solutions for healthcare providers, became aware of unauthorized access on January 22, 2026, after a phishing attack two days prior. The breach exposed personal and protected health information received from Xsolis’s hospital and payer clients, as reported by Security Affairs. The security incident, which occurred on January 20, 2026, allowed an unauthorized actor to acquire files containing sensitive information. This data may include names, addresses, dates of birth, Social Security numbers, health insurance details, and medical treatment information. Xsolis has launched an investigation, reported the incident to law enforcement, and is implementing enhanced security measures. Affected individuals are being notified by mail and offered free credit monitoring and identity protection services, along with access to a toll-free call center. The U.S. Department of Health and Human Services reported that 1,396,519 individuals were affected. No ransomware group has claimed responsibility for the attack at this time.

TataJul 4, 2026

Same action patternSame impact area

Tata Electronics Data Leak Exposes Apple iPhone 18 Pro Details

India probes Tata Electronics breach exposing iPhone secrets India is investigating a data breach at Tata Electronics that reportedly exposed confidential information linked to Apple’s unreleased iPhone 18 Pro, the country’s IT secretary said on Thursday (July 3), marking the government’s first public response to the incident. Sensitive documents, including component lists, supplier details and images of the iPhone 18 Pro, were allegedly posted on the dark web by a ransomware group that targeted Tata Electronics, an Apple supplier in India, Reuters reported. “We are investigating,” said S. Krishnan, secretary at the Ministry of Electronics and Information Technology, adding that the case has been referred to India’s Computer Emergency Response Team, the national cybersecurity agency. The breach raises concerns over Apple’s tightly controlled global supply chain, where production of iPhones relies on multiple international suppliers. Apple is expected to launch the iPhone 18 Pro and Pro Max in September. The leaked files are said to include at least six documents revealing supplier assignments for specific components—information Apple does not publicly disclose. Tata Electronics has reportedly hired a global consultancy firm to carry out a forensic audit following the leak, which also allegedly involved documents related to Tesla, Qualcomm and TSMC being published on the dark web, according to Reuters. (Newswire)

Related context

Ransomware Data Exposure

DystarJun 28, 2026

Same action patternSame impact area

DyStar Group Hit by Settra Ransomware Attack, 1.3 TB of Internal Data Exfiltrated

Sponsored by Hudson Rock – Use Hudson Rock's free cybercrime intelligence tools to learn how Infostealer infections are leading to ransomware attacks This page displays the 100 most recent victim disclosures attributed to ransomware groups, as detected by Ransomware.live . Our platform continuously monitors and scrapes ransomware group leak sites to identify and list newly published victims. Recent Breaches › dystar.com Listed by settra Ransomware Group dystar.com Listed by settra Ransomware Group: What Was Exposed & What To Do Occurred June 2026 · publicly disclosed June 28, 2026. Dystar.com was listed by the Settra ransomware group on June 28, 2026, with internal files reported exfiltrated in the attack. An undisclosed number of people may be affected; check the listing and monitor your accounts for signs of compromise. The incident was reported on 28 June 2026. dystar.com appears on a listing attributed to the settra ransomware group. The group claims to hold 1.3 terabytes of data described as the complete digital archive of DyStar. No independent confirmation of the volume, the date of access, or the method of entry has been released. The number of people affected remains undisclosed. Settra is a ransomware operator that lists victim organisations on a public site after encrypting systems and copying files. The group’s listings function as a claim that data has been taken and may be released if demands are not met. No additional statements from settra specific to dystar.com have been verified beyond the listing itself. dystar.com belongs to an organisation that operates in the specialty chemicals sector, supplying dyes and related products to industrial clients. Entities of this type routinely maintain records on production processes, customer accounts, supplier arrangements and internal communications. A breach that exposes such material can affect both commercial operations and any personal details contained in those records. The only category named in available reports is internal files exfiltrated during a ransomware attack. The precise contents of the 1.3 terabytes referenced in the listing have not been itemised by the organisation or independently verified. Organisations in this sector commonly store employee records, contractual documents and operational data, yet the exact composition of the material in this case stays unconfirmed. Internal files can contain identifying information, financial references or communications that retain value long after the initial incident. Individuals named in those files may encounter follow-on risks such as targeted fraud or unwanted contact. For the organisation, the exposure of proprietary material can complicate business relationships and regulatory compliance even if the number of personal records remains unknown. Begin by monitoring accounts linked to any email address you have used with dystar.com or its partners. Enable multi-factor authentication on those accounts and review recent login activity. Request a copy of any personal data the organisation holds about you under applicable data-protection rules. Readers can run a free exposure scan of their email address against known breach data to check for appearances in public listings. Change passwords for any accounts that may share credentials with dystar.com systems. Watch bank and credit statements for unusual activity over the next several months. Contact dystar.com directly to ask what categories of personal information were held and whether they have been notified of the listing. Read GalaxyWarden’s full analysis of the dystar.com Listed by settra Ransomware Group → Publicly posted by settra — unverified claim, pending independent verification Breach listings — particularly those originating from ransomware or leak sites — are third-party claims that may be unverified, incomplete, or inaccurate. A listing does not by itself confirm that a breach occurred or that any specific data was exposed. Severity is an automated a

Related context

Ransomware Data Exposure

GabiaJul 26, 2026

Same action patternSame impact area

South Korean Domain Registrar Gabia Hacked, Exposing 350,000 User Records

South Korean domain registrar Gabia experienced a cyberattack on Saturday, July 26, 2026, which impacted the online connectivity of approximately 100,000 registered domains. The incident led to the exposure of data belonging to 350,000 users. The compromised information included names, user IDs, passwords, and registration numbers. This breach highlights the significant risks associated with compromised credential reuse, as a large portion of the exposure originated from "Combolist sources." Additionally, active infostealer activity, linked to malware families such as LummaC2, Redline, and Rhadamanthys, was identified, further indicating a focus on credential theft impacting both clients and employees. The incident also revealed 245 compromised employee accounts, posing an infrastructure risk, and 30,782 leaked client credentials, creating regulatory liability. The timeline of related events showed an increase in client-related incidents from August 2025 through April 2026, with a peak in March 2026, and spikes in employee-related events in January, April, and May 2026. Remediation efforts should prioritize credential hygiene, multi-factor authentication enforcement, and enhanced monitoring for suspicious login activity, particularly targeting login forms and account management services. The incident was reported by the Korea Herald on Monday, July 28, 2026.

CoupangJul 24, 2026

Same action patternSame impact area

Coupang Data Breach: Authentication Failures Expose Customer Data in South Korea

South Korean e-commerce giant Coupang experienced a significant data breach between April and November 2026, with an additional access attempt in January. South Korea's Deputy Minister for Cybersecurity and Network Policy publicly attributed the incident to management failures and authentication vulnerabilities during a press conference on July 24, 2026. The attacker exploited user authentication vulnerabilities to gain unauthorized access to accounts without proper login credentials, leading to a large-scale unauthorized information leak. South Korean authorities emphasized that the breach was not the result of highly sophisticated intrusion techniques, but rather stemmed from fundamental security weaknesses in authentication mechanisms and inadequate security management practices. The breach resulted in large-scale unauthorized access to customer information. The unauthorized access has since been terminated. This incident has also led to a record fine of $422 million by South Korea's Personal Information Protection Commission (PIPC) and ongoing diplomatic discussions between South Korea and the U.S. due to Coupang being an American-owned company operating in South Korea.

Related context

Data Exposure

YonseiJul 21, 2026

Same action patternSame impact area

South Korean Diplomatic Academy Suffers Significant Data Leak Affecting 10,000 Diplomats

On July 21, 2026, the Korea National Diplomatic Academy, an institution affiliated with South Korea's Ministry of Foreign Affairs, confirmed a significant data leak impacting approximately 10,000 records of current and retired diplomats. The breach, which occurred in the academy's online education system, was discovered in early February 2026 after suspicious access was reported by a government agency. An unidentified attacker exploited a zero-day vulnerability in the server software and weaknesses in system security settings, maintaining unauthorized access from April to May 2025 until February 2026. The compromised data reportedly included names, user IDs, email addresses, encrypted passwords, job titles, and affiliated departments. While sensitive personal information such as resident registration numbers, mobile phone numbers, and home addresses were not present on the affected server, the leak of diplomat information raises concerns, especially given that the full list of diplomats and personnel at overseas missions is not publicly disclosed. The Foreign Ministry is investigating the incident and has urgently shut down the compromised system. They are operating under the assumption that a substantial volume of data was compromised, though the exact scale of the damage is still being assessed. The incident highlights the challenges in detecting sophisticated attacks that leverage previously unknown vulnerabilities.