In 1997, a flaw was discovered in how Linux and Windows handled IP fragmentation, a Denial-of-Service vulnerability which allowed systems to be crashed remotely.
If you want to make yourself too anxious to sleep at night, take a security expert out to lunch and ask about all of the ways in which your personal information is vulnerable at home, work, and on the internet. It will be an eye-opening experience! You’ll hear about encryption standards, key management, multi-factor authentication, SQL injection, DDoS attacks, men in the middle, attack vectors, AppSec, OWASP, Pen Tests, social engineering, black hats, white hats, grey hats and one hundred different terrifying data breaches (Target, Sony, Anthem, Home Depot and the like). Here’s some advice on how to protect yourself.