It likely wasn't by happenstance that cybercriminals attacked a major U.S. health system the week of Thanksgiving, IT security chiefs told Becker's.

Summerfield, Fla.-based Lakeview Healthcare System discovered that an unauthorized individual forcefully entered its Leesburg, Fla.-based Lakeview Specialist Facility and stole medical records containing protected health information. 

A Russian national pleaded guilty to his involvement in a ransomware plot that attacked U.S. hospitals, causing millions of dollars in losses.

The Nov. 23 ransomware attack on Nashville, Tenn.-based Ardent Health Services has impacted 30 hospitals across six states, WKRN reported Nov. 29. 

Patient information may have been compromised at Premier Health as the communications software company the organization uses was hit by the massive MOVEit breach that affected companies around the U.S., Dayton Daily News reported Nov. 28. 

A former University of Iowa Community HomeCare staff member and a former patient filed a proposed class-action lawsuit against UI Community HomeCare and UI Community Medical Services, part of UI Health Care, alleging the organization was negligent during a March data breach, The Gazette reported Nov. 28. 

On Nov. 22, officials from the Cybersecurity and Infrastructure Security Agency alerted Ardent Health Services about malicious cyber activity impacting its computer systems the day before the organization identified a ransomware attack on its facilities and affiliates, CNN reported Nov. 27. 

In response to the ransomware attack on Nashville, Tenn.-based Ardent Health Services and its affiliates, Stormont Vail Health took action by augmenting staffing levels at its hospital, emergency department and Express Care clinics, the Topeka Capital-Journal reported Nov. 28. 

Mission Community Hospital in Los Angeles is notifying patients that an unauthorized party gained access to its IT network in May, compromising patient information.

Tri-City Medical Center in Oceanside, Calif., has reinstated its EHR platform and resumed ambulance admissions after being hit by a cyberattack Nov. 9 that forced its systems offline, KPBS reported Nov. 27. 

An outage that has affected hospitals in at least four states across the South and Midwest is being attributed to a ransomware attack on Ardent Health Services, based in Nashville, Tenn.

Ambulances and emergency vehicles are being redirected at Pascack Valley Medical Center in Westwood, N.J., and Mountainside Medical Center in Montclair, N.J., due to a ransomware attack, WABC reported Nov. 27.

Hospitals in at least four states across across the South and Midwest experienced disruptions Nov. 24 due to potential cybersecurity incidents, although there is no evidence officially linking the incidences.

Warren (Pa.) General Hospital reported a data breach affecting nearly 169,000 patients.

New York is putting forth a series of fresh cybersecurity regulations aimed at the state's hospitals, a move that New Hyde Park, N.Y.-based Northwell Health's chief information security officer says is a positive step signaling recognition that additional efforts are essential to safeguard hospitals from cybersecurity threats.

New Hyde Park, N.Y.-based Northwell Health is facing a lawsuit for a data breach that affected 3.9 million people, Law360 reported Nov. 17. 

The U.S. Department of Homeland Security notified Washington, Ind.-based Daviess Community Hospital that it may have been the target of a breach after the organization found a security issue at the hospital during routine monitoring, the Washington Times Herald reported Nov. 16. 

On Nov. 16, a cybersecurity contractor admitted guilt for unlawfully accessing the computer systems of Lawrenceville, Ga.-based Gwinnett Medical Center back in 2018, Law360 reported.

A note started coming out of every printer during a cyberattack at Oceanside, Calif.-based Tri-City Medical Center, as employees raced to shut them off, the San Diego Union-Tribune reported Nov. 15.

Salem (Ohio) Regional Medical Center is the latest hospital to confirm being affected by a data breach that occurred at Perry Johnson & Associates, a medical transcription service, local news outlet, WFMJ reported Nov. 15.