Which of the following systems would be at the GREATEST risk of compromise if found to have an open vulnerability associated with perfect forward secrecy?

A security analyst has noticed an alert from the SIEM. A workstation is repeatedly trying to connect to port
445 of a file server on the production network. All of the attempts are made with invalid credentials. Which
of the following describes what is occurring?

A security analyst's company uses RADIUS to support a remote sales staff of more than 700 people. The Chief Information Security Officer (CISO) asked to have IPSec using ESP and 3DES enabled to ensure the confidentiality of the communication as per RFC 3162. After the implementation was complete, many sales users reported latency issues and other performance issues when attempting to connect remotely. Which of the following is occurring?

A cybersecurity analyst is retained by a firm for an open investigation. Upon arrival, the cybersecurity analyst reviews several security logs.
Given the following snippet of code:

Which of the following combinations BEST describes the situation and recommendations to be made for this situation?

A security incident has been created after noticing unusual behavior from a Windows domain controller. The server administrator has discovered that a user logged in to the server with elevated permissions, but the user's account does not follow the standard corporate naming scheme. There are also several other accounts in the administrators group that do not follow this naming scheme. Which of the following is the possible cause for this behavior and the BEST remediation step?