Normal
Level |
 |
- Normal communication on the Internet in the domestic private sector
- No hindrance to Internet communication and use
- Detection of malicious code such as worms/viruses
- Announcement of new security vulnerabilities or hacking techniques
- There is a possibility of low-risk local abnormal traffic.
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Warning
Level |
 |
- The possibility of damage due to the emergence of high-risk worms, viruses, vulnerabilities, and hacking techniques is increasing.
- There is concern over the inflow of cyberattacks whose damage is spreading abroad.
- Infringement incidents have occurred in some institutions.
- The possibility of cybersecurity risks, such as creating domestic/foreign, political/military crises.
|
 |
- Some information communication networks and information systems are failing.
- The likelihood of infringement incidents spreading to multiple agencies is increasing.
- The possibility of cybersecurity risks such as the occurrence of domestic/international political/military crises is increasing.
|
 |
- Multiple information and communication service provider(ISP) networks and backbone networks are failing or paralyzed.
- Infringement incidents have occurred in multiple institutions or the possibility of their escalating to large-scale damage is increasing.
|
 |
- Major information and communication networks and information systems at the national level are failing or paralyzed.
- Infringement incidents have occurred nationwide or incidents with large-scale
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