Year after year, I hear the same refrain in information security: "We need to share more data about security threats." I know I've been singing the same song myself for at least a decade, too. 

Information technology is a fast-moving field – ideas arise, reach prototype, and go to market quicker than it takes for the average clinical trial to be cleared; yet this one concept within information security – that defense requires greater visibility than can be obtained from any single network and to have a fighting chance we should reciprocally distribute data on the attacks and attackers we identify, remains an unresolved debate.

Those in favor of sharing information show that although they've had some limited success, the process has been difficult to build out and integrate, and the results are mixed due to insufficient data. More data sharing seems like an excellent idea, but they can only conjecture what the curve on the return on investment is for it at higher levels.

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