One case of a famous computer worm was the ________ which spread to millions of Windows machines via email, with a subject line of I Love You, and an attachment disguised as a love letter text file, actually an executable file that when opened attacked by copying itself to files and folders, launching other malicious software, replacing files, and then hiding.

Google IT Support Professional Certificate Course 5
IT Security: Defense against the digital dark arts

This course will help you understand:
- how various encryption algorithms and techniques work as well as their benefits and limitations.
- various authentication systems and types.
- the difference between authentication and authorization.
- how to evaluate potential risks and recommend ways to reduce risk.
- best practices for securing a network.
- how to help others to grasp security concepts and protect themselves.