Connect with us

Hi, what are you looking for?


Management & Strategy

South Korea Heightens Cyber Security Watch on Hacking

South Korea Nuclear Facility

South Korea Nuclear Facility

South Korea has heightened its security readiness against cyber attacks as concerns grew over a series of online information leaks at nuclear power plants, officials said Tuesday.

Seoul’s defence ministry said its cyber warfare unit increased its watch level against attacks from North Korean and other hackers, after the publication last week of a variety of information about the South’s nuclear power plant operator on Twitter.

The 400-member unit was set up in 2010 as part of efforts to expand South Korea’s cyber warfare capability to counter hacking threats from North Korea.

“In line with the heightened status of our national cyber security, the military has stepped up its readiness,” defence ministry spokesman Kim Min-Seok told reporters.

The energy ministry, which is in charge of nuclear power plants, and other related state bodies have also beefed up cyber security.

The information posted on Twitter included designs and manuals for two reactors, as well as personal information on some 10,000 workers at Korea Hydro and Nuclear Power (KHNP), which operates 23 nuclear reactors and supplies about 30 percent of the country’s electricity.

South Korea Hit By Cyber Attack

On Sunday the hacker suspected of being behind the leaks threatened to release more information unless the government shut down three reactors from December 25 and warned residents living near the plants to stay away for the coming months.

Advertisement. Scroll to continue reading.

KHNP said the leaks would not affect the safety of its reactors but it nevertheless launched a two-day drill from Monday to test its ability to thwart a cyber attack.

More information was disclosed Tuesday, including what appeared to be diagrams of the nuclear reactors in Gori and Wolsong, southeast of Seoul, with a message scoffing at the drill.

South Korean President Park Geun-Hye urged her cabinet on Tuesday to beef up cyber security for nuclear power plants and other key infrastructure facilities.

“We must maintain a tight defence against cyber terrorism targeting nuclear power plants and other key facilities,” she said.

Information leaks at nuclear power plants were serious crimes affecting “public safety”, Park said, calling for a “thorough” investigation into who was responsible.

Related: South Korea Nuclear Plants Stage Drill Against Cyber Attack

RelatedSouth Korea’s ‘Top Gun’ Cyber Warriors

RelatedCyberattack on German Steel Plant Caused Significant Damage

RelatedRegister Your Interest For the 2015 ICS Cyber Security Conference

Written By

AFP 2023

Click to comment

Daily Briefing Newsletter

Subscribe to the SecurityWeek Email Briefing to stay informed on the latest threats, trends, and technology, along with insightful columns from industry experts.

SecurityWeek’s Threat Detection and Incident Response Summit brings together security practitioners from around the world to share war stories on breaches, APT attacks and threat intelligence.


Securityweek’s CISO Forum will address issues and challenges that are top of mind for today’s security leaders and what the future looks like as chief defenders of the enterprise.


Expert Insights

Related Content

Application Security

Cycode, a startup that provides solutions for protecting software source code, emerged from stealth mode on Tuesday with $4.6 million in seed funding.

CISO Strategy

SecurityWeek spoke with more than 300 cybersecurity experts to see what is bubbling beneath the surface, and examine how those evolving threats will present...

Management & Strategy

SecurityWeek examines how a layoff-induced influx of experienced professionals into the job seeker market is affecting or might affect, the skills gap and recruitment...

CISO Conversations

In this issue of CISO Conversations we talk to two CISOs about solving the CISO/CIO conflict by combining the roles under one person.

CISO Strategy

Security professionals understand the need for resilience in their company’s security posture, but often fail to build their own psychological resilience to stress.

Management & Strategy

Industry professionals comment on the recent disruption of the Hive ransomware operation and its hacking by law enforcement.


Websites of German airports, administration bodies and banks were hit by DDoS attacks attributed to Russian hacker group Killnet

Management & Strategy

Tens of cybersecurity companies have announced cutting staff over the past year, in some cases significant portions of their global workforce.