Cyber Warfare. Hundreds of Cyber Security Industry Professionals say the next World War would be 1 of 2 possible wars, either Nuclear War or more likely Cyber War, the goal of Cyber Warfare is to cripple an opposing nation's Computer Networks and or Electrical Grid. Cyber Warfare is not always necessarily a term just for nation to nation war but also any ordinary Joe if they have programming experience and Penetration Testing experience they could easily get into a nation's or Industry Company's files for either black mail or to bring a country to a complete stand still. The most common way Cyber Warfare happens is a Distributed Denial of Service Attacks also commonly known as (DDoS). It is a process where a hacker sends hundreds of thousands of bot requests which floods the webpage to the point the website crashes. (Personal recollection and tandofline.com source)
A famous modern Cyber Warfare attack was a STUXNET worm which disrupted Iran's nuclear enrichment in 2010. Industry professionals after this stated, "The Era of Cyber Warfare has now really begun". In 2010. (ieeexplore.ieee.org source) STUXNET has become so sophisticated to the point it searches its targets only by looking for PLCs made by Siemens. PLCs are like the BIOs in computers. PLCs (Programmable Logic Controller) They are the interface between a program and machines such as a robotic arm which tells it what to do on an automated level. STUXNET Particularly looks for Seimens' WinCC/PCS 7 SCADA (Supervisory Control And Data Acquisitions) Software that runs on the PLC. STUXNET main goal is to take over control physical critical infrastructure. It waits for a specific command line from the PLC when it sees this command line it strikes to attempt to take control.
A few days ago, a 17-year-old kid not even graduated yet hacked into Rockstar Games and leaked Grand Theft Auto 6 and spoiled parts of the game that Rockstar has spent nearly 4 years in development. They found who hacked them and had them arrested. He also might be responsible for the recent Uber Hacks. Allegedly, he is part of a hacking group called "Laspus$". They allegedly target high profile digital intrusions in giant companies. The Grand Theft Auto 6 Leak is the largest video game leak in history. It contained 90 Video Files of early development footage. (For a pre-alpha build of a game in 2019 it looks way better than Grand Theft Auto 5 pre-alpha build). (kotaku.com source)
Sources:
https://ieeexplore.ieee.org/abstract/document/5634434
https://www.tandfonline.com/doi/abs/10.1080/09636412.2013.816122
https://kotaku.com/gta-6-vi-hack-leaker-arrested-teenager-london-laspsus-1849573250