Final answer:
The question relates to network security, focusing on logon failures indicative of a potential security incident. Lenny should investigate the issue to prevent unauthorized access and enforce stronger security measures.
Step-by-step explanation:
The question Lenny noticed a significant number of logon failures for administrator accounts on the organization's network appears to be incomplete and does not provide the option for a true or false response. However, based on the information provided, we can infer that the question is related to network security, which is a critical aspect of an organization's IT infrastructure. Logon failures could be indicative of a security incident, such as a brute force attack, where an attacker attempts to gain unauthorized access by systematically guessing passwords. It is essential for Lenny, presumably an IT professional or a security analyst, to investigate these logon failures to prevent potential security breaches. They may need to review security logs, set up alerts for unusual activities, enforce strong password policies, and use multi-factor authentication to enhance security.