Proposal of confidence level using MISP taxonomies

Dear,

Following the recent and good discussions at the TC, here is a proposal of confidence
level that we will implement in MISP via the misp-taxonomies:

{
     "predicate": "confidence-level",
     "entry": [
        {
          "expanded": "Completely confident",
          "value": "completely-confident",
          "numerical_value": 100
        },
        {
          "expanded": "Usually confident",
          "value": "usually-confident",
          "numerical_value": 75
        },
        {
          "expanded": "Fairly confident",
          "value": "fairly-confident",
          "numerical_value": 50
        },
        {
          "expanded": "Rarely confident",
          "value": "rarely-confident",
          "numerical_value": 25
        },
        {
          "expanded": "Unconfident",
          "value": "unconfident",
          "numerical_value": 0
        },
        {
          "expanded": "Confidence cannot be evaluated",
          "value": "confidence-cannot-be-evalued"
        }
     ]
}


https://github.com/MISP/misp-taxonomies/blob/master/misp/machinetag.json#L31

Feedback welcome. I also included the original slides I gave during the TC in Brussels.

I'll summarize the various options of integration with the taxonomies in STIX in another email.

Cheers.


-- 
Alexandre Dulaunoy
CIRCL - Computer Incident Response Center Luxembourg
41, avenue de la gare L-1611 Luxembourg
 - www.circl.lu