Final answer:
The existence of accounts that are no longer necessary poses a security threat because they can be exploited by unauthorized users, making the statement FALSE.
Step-by-step explanation:
The statement "Existence of accounts that are no longer necessary does not pose a security threat." is FALSE. In the realm of cybersecurity, redundant or obsolete accounts are a significant security concern. These accounts can serve as entry points for unauthorized users or malicious actors to gain access to systems and sensitive information. It is essential to practice good account management, which includes regularly reviewing and terminating accounts that are no longer needed. For example, if an employee leaves an organization, their account should be promptly deactivated to prevent potential security breaches.
For example, if an employee leaves a company but their account is not properly deactivated, an attacker could potentially gain access to that account and use it to access confidential company data. Similarly, unused user accounts on a website or an online platform can be targeted by hackers to carry out fraudulent activities or spread malware.