- Confidential and Proprietary - Luminar Annual Threat Landscape Report Page 30 Legend Threat Level Cyber threat levels are rated in accordance with the Multi-State Information Analysis Center (MS-ISAC) threat-level system: + Severe. Specific risk of hacking, virus, or other malicious activity. + High. High risk of malicious activity that targets or compromises core infrastructure. + Elevated. Significant risk due to increased malicious activity that compromises systems or diminishes service. + Guarded. General risk of increased hacking, virus or other malicious activity. + Low. No unusual activity exists beyond normal concern for malicious activity. Credibility Score – Source Reliability and Information Credibility Traffic Light Protocol The Traffic Light Protocol (TLP) was created in order to facilitate greater sharing of information. TLP is a set of designations used to ensure that sensitive information is shared with the appropriate audience. It employs the following colors to indicate expected sharing boundaries to be applied by the recipient(s). + Red. Not for disclosure, restricted to participants only. + Amber. Limited disclosure, restricted to participants’ organizations. + Green. Limited disclosure, restricted to the community. + White. Disclosure is not limited.