Fundamentals of InfoSecintermediate
Which activity is an example of sniffing?
Answer
Observing network traffic with a packet-analysis tool
Explanation
### Why this is right
Sniffing is eavesdropping on network traffic. A packet-analysis tool can display transmitted data, which may expose credentials if the protocol sends them in clear text.
### The concept
Traffic observation is a confidentiality risk. The material names Hypertext Transfer Protocol (HTTP), Simple Network Management Protocol (SNMP), Post Office Protocol (POP), File Transfer Protocol (FTP), Network News Transfer Protocol (NNTP), and Internet Message Access Protocol (IMAP) as protocols that can send usernames and passwords in clear text.
### The other options
- **Changing a database row without permission**: tampering or modification.
- **Blocking all users from a service**: denial of service or interruption.
- **Creating a false user account**: fabrication.
### Terms
- **Sniffing**: eavesdropping on network traffic.
- **Clear text**: data sent without encryption that can be read directly.
### Remember
Sniffing observes traffic; it does not necessarily change it.
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