$3)$ Recommendations to Prevent such Attacks in Future:

a$.$ Three Most Critical IT Policy Changes

$1.$ There is no Internet Domain Controller

A domain controller without internet access enables faster data recovery. Multiple geographical locations make manual transportation easier if needed.

$2.$ Cyber Security Team

Having a cyber security team helps the company enhance its defense against evolving technology. The team can create firewalls and other alternatives to strengthen the company's cyber security.

$3.$ System Update

To bolster its cybersecurity, Maersk must update its outdated system following the NotPetya attack. A reliable IT provider offering active customer service would be beneficial for damage control and ongoing support.

b$.$ Maersk Not Using Machine Learning Bases Intrusion Detection System

Using active machine learning in networks can act as a defense mechanism against attacks like NotPetya. It improves threat management by collecting and analyzing security data in a centralized location. The technology identifies potential threats to an organization and coordinates response efforts. Machine learning helps develop prevention measures by studying cyber security patterns and algorithms. This results in an updated learning system that is difficult to breach. By deploying active machine learning, organizations can enhance their threat management capabilities and better prevent cyber$-$attacks.