Ascension St. John suffered a cybersecurity incident on May 8, leading to operational disruptions at Texas and Kansas hospitals.

The health system engaged cybersecurity firm Mandiant for investigation support.

Ascension advised business partners to disconnect from its network as a precaution.

The impact on patient data and the full extent of the disruption are still under evaluation.

Ascension is actively managing patient care to minimize effects due to the cyber event.

Updates on the situation are available on Ascension's website and via Matthew Self's Twitter.

The event underscores the critical need for improved cybersecurity in the healthcare sector.