An accounting clerk sent money to an attacker's bank account after receiving fraudulent instructions over the phone to use a new account. Which of the following would most likely prevent this activity in the future?

While standardizing security incident reporting is essential for tracking and addressing security breaches, it does not directly prevent fraudulent transactions from occurring in the first place. This choice focuses more on documenting incidents after they happen rather than on enhancing preventive measures during the transaction process.

Conducting regular phishing campaigns can raise awareness and prepare employees for potential phishing attempts. However, this approach primarily targets employees' ability to recognize phishing attempts rather than addressing the specific vulnerabilities associated with wire transfer processes. It is a reactive measure rather than a preventative one for fraudulent transactions.

Insider threat detection measures are critical for identifying and mitigating risks posed by employees who might exploit their access to organizational resources. However, this choice does not specifically address the issue of external fraud, such as the scenario described, where an attacker impersonates a legitimate entity. It focuses on internal threats rather than the specific vulnerability of wire transfer processes.