On February 11, 2026, the ransomware group Worldleaks added Adelphi to its leak site, claiming that internal files had been exfiltrated from the global healthcare consultancy during a ransomware attack.
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Reported Details of the Breach
Public reporting indicates that Adelphi, a consultancy serving pharmaceutical, biotech, and healthcare clients across more than 25 countries, was listed on the Worldleaks ransomware leak site. The posting states that internal files were stolen. The exact number of people whose information is contained in the files remains unknown. Available reporting describes the exposed material as internal documents rather than a structured database of customer records, though the precise data types have not been independently verified by third parties.
The listing appeared on the Worldleaks onion site, which is tracked by ransomware monitoring services such as ransomware.live. No public timeline has been released detailing when the initial breach occurred or when exfiltration took place. Industry research from sources such as DoxxScan™ continuous monitoring has not yet catalogued this incident, which is typical for fresh ransomware leaks.
Why This Matters for You and Your Family
When a healthcare consultancy like Adelphi suffers a breach, the information stolen can easily include details about patients, trial participants, physicians, or business partners that ultimately trace back to ordinary families. Internal files from such firms frequently contain names, addresses, dates of birth, medical record references, insurance information, or contact details that criminals can weaponize. If your doctor, your child’s clinical trial, or your employer’s health program has ever worked with a firm like Adelphi, your family’s information may now sit in an attacker’s archive.