Excellent site, much here!-----Cyber Warfare, explained

Cyber warfare is the use of digital tools by states to spy on, damage or pressure other states.

Some countries use cyber tools to steal money as a source of income.

• Digital (or cyber) space is now seen as the 5th area of military activity, alongside land, sea, air and space.
• Cyber space has no international treaty. 

There is no agreement on what counts as an act of war, and what is a legal response to a state-sponsored cyberattack.

• A zero-day is a flaw in a computer program that is known to hackers but not to the developer.
• A zero-day can be hidden until used to attack a system...