Healthcare providers in the US have been urged to improve their data management practices to prevent security lapses.
According to the Ponemon Institute, healthcare is one of the "most-breached industries" in the country.
This, it said, is because many bodies have not devoted enough resources to keeping sensitive material about patients secure.
"Healthcare providers and supporting organizations don't currently have sufficient security and privacy budgets," said Dr Larry Ponemon, founder and chairman of the institute.
The number of data breaches in the sector could be partly down to the growing proliferation of mobile devices among both employees and members of the public.
Last year, the Ponemon Institute revealed that more than eight in ten healthcare workers use gadgets such as smartphones to "collect, store and/or transmit" protected health information.
Figures also showed that nearly one in two healthcare organizations have not put procedures in place to keep these devices secure.