Explore the 11 biggest hacker attacks in history highlighting breaches such as the 1999 attack on NASA or cyberattack that shut down an oil processing facility.

Cyber attacks are deliberate attempts to steal, alter, or destroy data or to disrupt operations and to damage the digital parts of a critical infrastructure. This blog post explores the most destructive major cyber attacks in history, detailing the underlying motives and impact, and then offers prevention and detection best practices.

Internet security software performing an anti-virus and anti-spyware scan on a laptop, after the NHS has been hit by a major cyber attack on its computer systems. Whether they’re financially or politically motivated, cyberattacks can have enormously far-reaching effects.

Some cyber attacks are worse than others. While some only cause short-term problems and outages, other, bigger cyber attacks can be devastating – leaving companies with their reputation in tatters and a massive hole in their wallet. In this list, we’re counting down ten of the biggest cyber attacks in history, exploring each attack's impact ...