A brief history

• 1980s

  • downloading arbitrary binaries and executing them is a BAD IDEA
  • Archie and ftp
  • risks include:
    • Trojan Horses
    • viruses
  • checksumming to the rescue?

• 1992

  • the Web arrives
  • Archie dies

• 1995

  • Java and Javascript introduce widespread mobile code
  • the concept virus appears

• 1999

  • Melissa
  • explorezip virus

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