An unidentified hacker launched a cyber attack against Estonian telecom service provider Elion’s email system, attempting to gain access to 70,000 client accounts, Estonian Public Broadcasting reports.
An investigation determined the intruder failed to access passwords and content. The attack, which came from outside of Estonia, was the largest cyber attack Elion has experienced, the company’s Chief Technical Engineer Kalev Reiljan told Postimees.
The cyber assault began June 29 and ended July 7, Elion said. The company notified all of its customers who may have been affected and urged them to change their passwords.
Elion’s most popular email service, hot.ee, was not affected. The domains that came under attack included neti.ee, estpak.ee, domeeninimi.ee and online.ee.
Last November, one of Elion’s networks experienced a disruption for an hour, rendering Internet, TV, ATMs and emergency phone services unavailable in many locations. The company ruled out a cyber attack and instead looked into the possibility of unknown saboteurs.