The numerous data breaches that occurred over the years clearly indicate that cybersecurity is still prone to failure. Every new security measure system defenders come up with is eventually thwarted by hackers.
The number of affected users is staggering. A minimum of 500 million Yahoo users were affected by the 2014 security breach that hit the company. The last US presidential election was rife with reports of hackers stealing sensitive emails. Meanwhile, the US Navy, the Internal Revenue Service, and the Justice Department were also targeted by hackers.