The beach affected nearly 3,000 email addresses and passwords, belonging to both current and former students. The vast majority of the account-holders are women.
All of them appear to be students admitted between the fall of 2006 and 2014. URI said no new students appear to be on the list.
University of Rhode Island police continue to investigate how the data was accessed and who is responsible. They are also working with police from Manchester, New Hampshire, who are investigating another, similar breach.
State police do not currently intend to join the investigation.
URI officials emphasized on Friday that the data accessed in the incident came from an email system outside of the university's other networks. They believe that all financial and other information is secure.