Comprehensive and Detailed Explanation (ECIH-aligned):

This incident involves malware embedded within third-party modifications, affecting financial data and game integrity. The ECIH malware handling framework prioritizes rapid containment to prevent further exploitation before analysis or public communication.

Option B is correct because disabling all mods immediately stops the malicious mod from continuing to operate, preventing additional data theft and financial abuse. This action contains the threat across the entire user base quickly and uniformly.

Option A focuses on detection and removal but may miss distributed instances already in use. Option C is a communication step that should follow containment. Option D delays action and allows continued exploitation.

ECIH stresses that when malware is actively impacting users at scale, containment actions that reduce attack surface globally are preferred. Disabling all mods is the fastest and safest initial containment measure, making Option B correct.