Unknown threat actor hit Colombian hospital with ransomware in February 2023

BianLian ransomware group gained access to the network of the Ophthalmology practice Retina & Vitreous of Texas as early as 1 February 2023

Unknown threat actor accessed protected health information at New York urology clinic in early 2023

Unknown actors locked the network of Oklahoma Institute of Allergy, Asthma and Immunology possibly beginning February 2023

Iranian state-sponsored hacking group Peach Sandstorm aka HOLMIUM gained access to various organisations globally beginning in February 2023

Government-backed group Grayling targeted manufacturing, IT, and biomedical sectors across Taiwan, Vietnam, the US and an unnamed Pacific island for reconnaissance, between February and May 2023