Traffic Light Protocol (TLP)

Traffic Light Protocol ( TLP ) was established to promote better exchange of sensitive information (but unclassified) in the field of information security. The author of that information needs to indicate where information can flow beyond the immediate recipient, and this should consult the original author when information needs to be distributed to third parties.

A code of four colors is used, whose meaning can be found in the following table:

Code When to use it How to share it Color Background
 TLP:RED   TLP:RED  should be used when the information is limited to specific individuals, and could have an impact on privacy, reputation or operations if misused. Recipients should not share information designated as  TLP:RED  with any third party outside the area where it was originally exposed. #ff0033 #000000
 TLP:AMBER   TLP:AMBER  should be used when information needs to be distributed to a limited extent, but poses a risk to the privacy, reputation or operations if shared outside the organization. Recipients can share information indicated as  TLP:AMBER  only with members of their own organization who need to knowand with clients or customers who need to know the information to protect themselves or prevent further harm. Sources are at liberty to specify additional intended limits of the sharing: these must be adhered to. #ffc000 #000000
 TLP:GREEN   TLP:GREEN  when the information is useful for all organizations involved, as well as with community or sector. Recipients can share information indicated as  TLP:GREEN  with affiliated organizations or members of the same sector, but never through public channels. #33ff00 #000000
 TLP:WHITE   TLP:WHITE  when information poses no risk of misuse, within the rules and procedures for public dissemination.  TLP:WHITE  information can be distributed without restrictions, but still subject to Copyright controls #ffffff #000000

How to use it

The author must check the information with appropriate color to indicate scope TLP is the dissemination of such information, usually including the text "TLP:COLOR" in the header and footer of the document, using the colors on the table above.

If the recipient needs to disseminate that information with third parties beyond the scope of the TLP designation indicated, should refer to the source of the information.

Why using it?

TLP is a simple and intuitive scheme to indicate when and how sensitive is the information on cybersecurity that will be shared, and facilitates collaboration with other entities or organizations at national and international level.

How TLP relates to other classification schemes?

TLP is not applicable to classified information, as is provided for in the Security Classification Information National Authority for the Protection of Classified Information

TLP designation is not a category or subcategory of these standards , and should only be used operationally.

Who does use TLP?

TLP is used by public and private organizations in the field of cybersecurity, both in Spain and in other countries like United States, Australia, Canada, Finland, France, Germany, Hungary, Italy, Japan, Netherlands, New Zealand, Norway, Sweden, Switzerland, and United Kingdom.

For more info about the TLP standard, please visit