The most vulnerable hospitals are unprepared to deal with the impact of digital extortion as ransomware attacks target health care facilities.

The District of Columbia Board of Elections became aware Thursday of the breach, which occurred via its hosting provider.

In a statement CommonSpirit Health says it has taken certain systems offline as a precaution.

More than half of the respondents to a health care cybersecurity survey say their organizations suffered a ransomware attack in the past year.

The ransomware has previously received little public scrutiny.