CVE-2020-12812, which allow attackers to bypass multi-factor authentication simply by modifying username capitalization. Beyond initial access, the documentation details how adversaries use these flaws to facilitate ransomware, data theft, and persistent network control. To counter these threats, technical guides and community discussions recommend rigorous mitigation steps, including immediate patching, network segmentation, and the implementation of geographic blocking. Advanced defensive tactics also involve using loopback interfaces and automation scripts to identify and blackball malicious IP addresses or entire autonomous system numbers. Collectively, the texts emphasize a layered security approach to reduce the attack surface of public-facing VPN services. © 2026 Cybertech79. All Rights Reserved.