This is the first time that a cyber attack
“These interruptions had no impact to generation and did not cause electrical system separation,” Lara Hamsher, government relations and communications manager at sPower, said in an emailed statement.
The incident was confirmed by documents obtained under the Freedom of Information Act.
“The attack left operators at the company,
Threat actors exploited a known flaw in Cisco firewalls to disrupt communications over a span of about 12 hours, according to the emergency report sPower filed with the Department of Energy.
The attackers carried out Denial-of-service
According to the E&E News website that first reported the news of a ‘Cyber event’ that disrupted U.S. grid networks, the attack was not targeted.
Hackers were only focused on exploiting the flaws in Cisco firewalls used by organizations in every industry.
DOE confirmed that at the time is not aware of any related incidents in the energy sector.
The incident demonstrates that a trivial cyber attack could cause severe damages to power grids, the attack, in fact, is not sophisticated.
Dealing with sophisticated