In today’s era, cybersecurity is essential to us. However, half a century ago, Internet 3security was not in the range. The most important thing was for the new package-based scheme to work. Protection in a harmonious team was not needed; at that time, no one had access to the network. Currently, the ubiquitous access to the Internet has caused a massive increase in the number of cyberattacks. In retrospect, it can be seen that ignoring security was a huge drawback.

https://www.cybersecurity-insiders.com/a-brief-history-of-cybersecurity/