Blockchain-Based Cyber Threat Intelligence Sharing Using Proof-of-Quality Consensus

Table 2

CTI quality parameters.

Parameters	Description
Extensiveness	Evaluates how many optional parameters are filled in
False positives	Determines how often feeds are invalidated
Verifiability	Expresses is a feed is linked with primary sources of information
Intelligence	Indicates how much added value a feed offers in the information by linking it to other objects
Interoperability	Measures if a CTI feed follows a specific data format to provide the data
Syntactic accuracy	Determines how compliant a feed is to the standard which is followed
Originality	Evaluates how unique the entries of each feed are
Timeliness	Analyses how soon a CTI feed is releasing information in comparison of the initial date of the malicious activity
Impact	Measures the consequences to an organisation if the information from a feed is applied
Standardisation	Measures how much of free text is used in the feed’s objects