...to the Battlements, Yonder!
RAND Corporation, has published a not-entirely-surprising study targeting what appears to be the highly unsuccessful security postures of organizations under scrutiny. Entitled "The Defender's Dilemma: Charting a Course Toward Cybersecurity". Apparently, the notion of "Come And Take It" is not a particularly successful stratagem in modern electronic warfare...
Citation Libicki, Martin C., Lillian Ablon and Tim Webb. The Defender's Dilemma: Charting a Course Toward Cybersecurity. Santa Monica, CA: RAND Corporation, 2015. http://www.rand.org/pubs/research_reports/RR1024. Also available in print form.