A security analyst has performed various scans and found vulnerabilities in several applications that affect production data. Remediation of all exploits may cause certain applications to no longer work. Which of the following activities would need to be conducted BEFORE remediation?

The threat intelligence department recently learned of an advanced persistent threat that is leveraging a new strain of malware, exploiting a system router. The company currently uses the same device mentioned in the threat report. Which of the following configuration changes would BEST improve the organization's security posture?

During a routine log review, a security analyst has found the following commands that cannot be identified from the Bash history log on the root user.

Which of the following commands should the analyst investigate FIRST?

A company's marketing emails are either being found in a spam folder or not being delivered at all. The security analyst investigates the issue and discovers the emails in question are being sent on behalf of the company by a third party, mail.marketing.com. Below is the existing SPF record:
v=spf1 a mx -all
Which of the following updates to the SPF record will work BEST to prevent the emails from being marked as spam or blocked?

Which of the following threat classifications would MOST likely use polymorphic code?