International procedures
Diffusion
A less formal alert mechanism between countries — how it differs from a notice.
Definition
A diffusion is a less formal alert that a country sends directly to other Interpol members, bypassing publication of a notice by the General Secretariat.
Diffusions undergo less stringent prior review, so the risk of errors and abuse is higher — but they can be challenged through the CCF in the same way.
Legal basis
- Interpol's Rules on the Processing of Data (RPD)
- Interpol's Constitution
Stages
- 1
Distribution
A country sends the diffusion directly to other members.
- 2
Use
Receiving countries act at their discretion.
- 3
Challenge
The person files a CCF request.
Required documents
- Identity document
- Evidence of impermissible grounds
- Status documents
Appeal options
- A CCF request to delete the data
Common mistakes & risks
- Underestimating a diffusion compared with a notice
- Inaction before travelling
Frequently asked questions
How does a diffusion differ from a notice?
A diffusion is sent directly by a country and undergoes less stringent review than a Red Notice.
Can it be challenged?
Yes, through the same CCF mechanism.