Lee Enterprises filed a new report with the SEC It confirmed suffering a ransomware attack and having files encrypted As outage drags on, the investigation continues The recent cyberattack on newspaper firm Lee Enterprises has turned out to be a ransomware attack,

The newspaper chain said attackers encrypted critical applications and impacted billing, payments and print distribution.

Post-Dispatch owner says “threat actors” accessed the company network, targeting “critical applications” and stealing data.

Lee Enterprises, which owns the Quad City Times, is still working to restore core systems that briefly went offline this month from a ransomware attack.

The company, a major U.S. newspaper chain, has been working with forensic specialists to fully restore services and determine the cause.