Eleventh Hour Security+

Viruses and worms

Malicious software has appeared in many forms over the decades, but the problem has increased substantially as more computers and devices are able to communicate with one another.

• Before networks were commonplace, a person transferring data needed to physically transport software between machines, often using floppy diskettes or other removable media.
• To infect additional machines, the malicious software would have to write itself to the media without the user’s knowledge.
• With the widespread use of networking, exploitable vulnerabilities, file sharing, and e-mail attachments made it much easier for malware to disseminate.

There are many different types of malicious code that are written with the intention of causing damage ...