SonicWall Under Siege: The ‘OVERSTEP’ Rootkit Explained and How to Remove It

SonicWall Under Siege: The ‘OVERSTEP’ Rootkit Explained and How to Remove It By CyberDudeBivash • September 2025 A deep dive into the OVERSTEP rootkit targeting SonicWall SMA appliances — and the path to detection, removal, and hardening. Disclosure: This post contains affiliate links. If you use them, CyberDudeBivash may earn a commission at no extra cost to you. We only recommend vetted cybersecurity courses and tools that strengthen enterprise defenses. Recommended Security Resources (CyberDudeBivash Partners) EDUREKA — Advanced Cybersecurity & Rootkit Analysis Courses AliExpress WW — Security Hardware (MFA Keys, USB Analyzers) Alibaba WW — Enterprise Security Solutions for SMBs Kaspersky — Endpoint & Network Security Platforms When you think about trusted names in network security, SonicWall has often been on the shortlist. For decades, its firewalls and secure remote access appliances have be...