Henry Rossi & Co. Data Breach Exposes Sensitive Information of 2,720 Individuals Henry Rossi & Co., a certified public accounting firm in Monroeville, Pennsylvania, disclosed a data breach affecting approximately 2,720 individuals across the U.S. An unauthorized actor accessed the firm’s systems on January 17 and 18, 2026, prompting an immediate investigation after suspicious activity was detected. The breach involved audit records tied to the Steamfitters Local #449 Medical & Benefit Fund, with exposed data including full names, Social Security numbers, and dates of birth. A forensic review concluded on April 3, 2026, confirming the compromised information. Henry Rossi & Co. filed a disclosure with the U.S. Department of Health and Human Services on June 2, 2026, and began notifying affected individuals on June 10, 2026. The firm established a dedicated helpline (933-918-5956) for inquiries but did not offer free credit monitoring or identity protection services to impacted parties.