~/ soc-analyst · ot-defence
Network
Security
Hello, I'm João — a network & security analyst focused on defending critical infrastructure.
// 01 — ~/experience
Experience
SOC Analyst L1 · Electricity Distribution Operator
Monitor SIEM telemetry (Splunk, ArcSight) across an OT and critical-infrastructure environment; correlate logs to triage anomalous traffic and tune detections.
Network Technician · Telecommunications Operator
Resolved Layer 3/4 escalations across the operator network; configured and troubleshot routing protocols and site-to-site and remote-access VPN tunnels.
CCNA · Cisco Certified Network Associate
CCNP Security currently in progress · Fortinet NSE 2.
CTeSP · Systems and Network Administration
Designed and secured LANs with VLAN segmentation, ACLs, OSPF, and BGP.
// 02 — ~/projects
Projects
A password vault that hides encrypted data inside a picture. It runs in the browser and makes no network calls. The key comes from your master password with AES-GCM and PBKDF2.
open project →A networking workbench, judged against the RFCs: it analyzes and builds firewall rules, calculates subnets, grades HTTP security headers, and decodes pcap packets. It runs entirely in the browser and makes no network calls.
open project →A Markdown notebook that keeps your notes in a vault and links them with wiki-links and backlinks. It runs in the browser and makes no network calls.
open project →