Role of cyber intelligence and counter intelligence play today

Based on the Learn items, what role does or should cyber intelligence and counter intelligence play today? Discuss information warfare theory and application. Provide an overview of high-level legal aspects both within the U.S. and internationally as they pertain to cybersecurity. Finally, discuss and defend your stance on the use of electronic data collection for law enforcement and or intelligence purposes.
Textbook:

Johnson, T. A. (2015). Cybersecurity: Protecting critical infrastructures from cyber attack and cyber warfare.Boca Raton, FL: CRC Press. ISBN: 9781482239225.

Pichtel, J. (2016). Terrorism and WMDs (2nd ed.). Boca Raton, FL: CRC Press. ISBN: 9781498738989.