What does computer security look like today and how has in changed in view of todays threats and modern malware?

One of the first effective computer worms was the Morris Worm in 1988.  How has computer security changed since that time?  Compared to this worm’s infancy in 1988, what does computer security look like today and how has in changed in view of todays threats and modern malware?

: https://en.wikipedia.org/wiki/Timeline_of_computer_viruses_and_worms 

Cyber news (current attacks, breaches):  https://www.sans.org/newsletters/newsbites/xxi/55

SANS Cyber white papers:  https://www.sans.org/reading-room