404Saint

Rugero Tesla (404saint) – Industrial & Network Security | Offensive Security Researcher Focused on ICS/OT environments, attack path analysis, and resilient infrastructure design.

Earth Joined on Feb 28, 2026 https://rugerotesla.vercel.app/

404Saint

May 22

I Spent Hours Fighting a Silent Subnet Conflict to Build an Isolated ICS Security Lab (And What It Taught Me About the Linux Kernel)

#gns3 #ot #ics #cybersecurity

5 min read

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404Saint

May 18

I Wrote 10 Lines of Python and Took Control of a PLC. No Password Required.

#security #ics #ot #scada

7 min read

404Saint

May 3

Recon Methodology in Practice: From a Single Credential to Full Schema Reconstruction

#security #devops #webdev #tutorial

5 min read

Spots ranking anomalies through cross-checks

404Saint

May 2

I Built a Tool That Detects SEO Poisoning Across Multiple Search Engines

#security #python #opensource #devops

6 min read

404Saint

Apr 13

Securing the Air-Gap: Building a Hardware-Aware Forensic Suite for ICS/OT

#security #ot #ics #forensics

4 min read

404Saint

Apr 11

SurfaceLens V2: Infrastructure Attack Surface and Shadow IT Intelligence Engine

#security #cybersecurity #python #opensource

5 min read

404Saint

Feb 28

MEA: Modbus Exposure Analyzer — Passive ICS/OT Security Analysis

#cybersecurity #security #opensource

4 min read

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404Saint

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GitHub Repositories

I Spent Hours Fighting a Silent Subnet Conflict to Build an Isolated ICS Security Lab (And What It Taught Me About the Linux Kernel)

Want to connect with 404Saint?

I Wrote 10 Lines of Python and Took Control of a PLC. No Password Required.

Recon Methodology in Practice: From a Single Credential to Full Schema Reconstruction

I Built a Tool That Detects SEO Poisoning Across Multiple Search Engines

Securing the Air-Gap: Building a Hardware-Aware Forensic Suite for ICS/OT

SurfaceLens V2: Infrastructure Attack Surface and Shadow IT Intelligence Engine

MEA: Modbus Exposure Analyzer — Passive ICS/OT Security Analysis