Which of the following is a legal form of eavesdropping when performed with prior consent or a warrant?

A.
Denial of Service

B.
Dumpster diving

C.
Wiretapping

D.
Data diddling

Explanation:
C: Most communications signals are vulnerable to some type of wiretapping or eavesdropping. It can usually be done undetected and is referred to as a
passive attack. Tools used to intercept communications include cellular scanners, radio receivers, microphone receivers, tape recorders, network sniffers,
and telephone-tapping devices. It is illegal to intentionally eavesdrop on another person’s conversation under many countries’ existing wiretap laws. In
many cases, this action is only acceptable if the person consents or there is a court order allowing law enforcement to perform these types of activities.
Under the latter circumstances, the law enforcement officers must show probable cause to support their allegation that criminal activity is taking place and
can only listen to relevant conversations. These requirements are in place to protect an individual’s privacy rights.
A is incorrect because Denial of Service (DoS) is an attack, not a form of eavesdropping. A DoS has the intent of overwhelming a victim system so that it
can no longer carry out its intended functionality.
B is incorrect because dumpster diving is legal unless it involves trespassing. Dumpster diving refers to going through someone’s trash to find
confidential or useful information. This is not considered a type of eavesdropping.
D is incorrect because data diddling is the act of willfully modifying information, programs, or documentation in an effort to commit fraud or disrupt
production. Many times, this modification happens before the data is entered into an application or as soon as it completes processing and is outputted
from an application. For instance, if a loan processor is entering information for a customer’s loan of $100,000, but instead enters $150,000 and then
moves the extra approved money somewhere else, this would be a case of data diddling.