A penetration tester was able to retrieve the initial VPN user domain credentials by phishing a member of the IT department. Afterward, the penetration tester obtained hashes over the VPN and easily cracked them using a dictionary attack. Which of the following remediation steps should be recommended? (Select THREE).
A. Mandate all employees take security awareness training
B. Implement two-factor authentication for remote access
C. Install an intrusion prevention system
D. Increase password complexity requirements
E. Install a security information event monitoring solution
F. Prevent members of the IT department from interactively logging in as administrators
G. Upgrade the cipher suite used for the VPN solution