Russian hacker group Killnet has claimed responsibility for a string of recent cyberattacks that took more than a dozen hospital websites offline across the U.S. — including the websites for Cedars-Sinai, Michigan Medicine, and UPMC. The group has been active for at least a year and is known to target countries that support and/or send resources to Ukraine.

In an analysis of Epic’s sepsis model, researchers at the University of Michigan found that it performed “substantially worse” than what the developer reported. According to their analysis, it didn’t detect many undiagnosed sepsis cases, but still gave alerts for one in five hospitalized patients. 

Of 26 health systems surveyed by MedCity News, nearly half used automated tools to respond to the Covid-19 pandemic, but none of them were regulated. Even as some hospitals continued using these algorithms, experts cautioned against their use in high-stakes decisions.