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Security Incident Level

**Security accident level**
Level	Content
Serious(Level 1)	Network and information unavailable at the national level A need to respond at the national level An error that affects the entire information system
Caution (Level 2)	ISP network or the institutions’ network is disabled or unable to be used Damage occurred at various institutions Damage due to an attack on the important work system
Warning (Level 3)	Damage due to an attack on the information system Information stored in the system stolen for the malicious purposes Detection of rapid increase in network traffic provided by security control tower
Normal Level	Appearance of new type of computer virus from inside or outside of the country Announcements on the latest hacking methods, weak points of security Inspections and blocking for unnecessary services Updates on vaccine and software Diffusion of the news related to infringement accidents Inspections for weak points and responses through spreading security information via web robots

UST operates 24-hour security controlconducted by S&T-Sec.

Information Technology Team - Choi Eunyeong(☎042)865-2381)