Change Healthcare disclosed Thursday that the ongoing cybersecurity attack plaguing pharmacies and health systems across the U.S. is orchestrated by the Russian-based ransomware group Blackcat. The attack, which has created widespread disruptions, accentuates the growing threat posed by cybercriminals to critical infrastructure and sensitive healthcare data.

In response to the breach, Change Healthcare has mobilized a team of experts to tackle the issue and is collaborating closely with law enforcement agencies and leading third-party consultants. The company is actively evaluating the impact of the attack on members, patients, and customers, as it works sincerely to mitigate the damage caused.