Which term refers to the insertion of bits into gaps in a data stream to frustrate traffic analysis attempts?

• A. Traffic padding
• B. Data encryption
• C. Data masking
• D. Pseudonymization

Answer: (A)

Traffic padding refers to the practice of inserting extra bits into a data stream to obscure the actual data flow and thwart attempts to analyze the traffic. By adding this padding, the patterns and characteristics of the original data become less discernible, making it difficult for an observer or attacker to derive meaningful insights into the nature of the communication. This technique enhances privacy and security by masking the true volume and frequency of the data being transmitted.

While data encryption is focused on encoding the actual content of the data to prevent unauthorized access, it does not directly aim to obscure the traffic patterns. Data masking involves altering data to protect sensitive information while maintaining a semblance of usability. Pseudonymization replaces identifiable information with artificial identifiers, yet it does not add bits into the data stream itself. Thus, traffic padding is uniquely suited to addressing traffic analysis threats by modifying the structure of the data flow.