According to security experts, which group poses the biggest threat to data security?

The choice that indicates the agency's own personnel poses the biggest threat to data security is supported by several key points. Internal personnel often have the most access to sensitive data and systems, making them in a unique position to either inadvertently or intentionally misuse that access.

Human factors play a significant role in data security; insiders sometimes engage in reckless behavior, such as falling for phishing schemes or neglecting security protocols. Additionally, some individuals may have malicious intent, potentially leading to data theft or sabotage. Historically, many data breaches have been caused by insiders rather than external threats.

This perspective highlights the importance of stringent internal controls, thorough background checks for personnel, and ongoing training and awareness programs to mitigate risks associated with insider threats. As such, focusing on the security of agency personnel is critical for maintaining robust data security measures.