S. Markakis

Security researcher who also keeps the lights on. Pentesting, server administration, network design, backup systems, and the automation glue in between.

[S. Markakis @_SP1R4]

Tired of drawing WiFi coverage as perfect circles that lie to you?
I built Plexus — a free, open-source network site planner with wall-aware ray-cast coverage, real RF heatmaps, and PoE/cable planning. No backend. No account. Runs in your browser.
🔗 https://t.co/5CffSYQaun
🧵 thread

[S. Markakis @_SP1R4]

macOS / Windows / Linux desktop apps on the releases page. Or just npm install && npm run dev if you want to poke at the code.
⭐ Star it if it's useful: 👉 https://t.co/BTOcbvu6uA
#wifi #networking #opensource #neteng #rfplanning

[S. Markakis @_SP1R4]

Tired of drawing WiFi coverage as perfect circles that lie to you?
I built Plexus — a free, open-source network site planner with wall-aware ray-cast coverage, real RF heatmaps, and PoE/cable planning. No backend. No account. Runs in your browser.
🔗 https://t.co/5CffSYQaun
🧵 thread

[S. Markakis @_SP1R4]

Zero dependencies to run it. No accounts, no cloud, no telemetry. Projects save as a single JSON file.Or just share a link — the 🔗 Share button packs the whole project into a gzip+base64 URL that opens in any browser.

[S. Markakis @_SP1R4]

It's not just WiFi:

IP cameras with FoV cones (UniFi Protect, Hikvision, Axis…)
Switch PoE budgets + cable runs with length warnings
Directional antennas (sector 30/60/90°, ceiling-down, wall-mount)
Auto channel + Tx-power planner
Multi-floor support

[S. Markakis @_SP1R4]

The coverage engine casts 72 rays per AP, accumulates dB loss per wall material (drywall, brick, concrete, glass), applies band multipliers for 2.4/5/6 GHz, and clips the polygon to what RF actually reaches.
Switch the heatmap between RSSI → SNR → MCS → estimated throughput in one click.

[S. Markakis @_SP1R4]

I just solved TombWatcher on Hack The Box! https://t.co/GWhOsBvahf #HackTheBox #HTB #CyberSecurity #EthicalHacking #InfoSec #PenTesting

[S. Markakis @_SP1R4]

I just solved Interpreter on Hack The Box! https://t.co/stZ1t8TuAN #HackTheBox #HTB #CyberSecurity #EthicalHacking #InfoSec #PenTesting

[S. Markakis @_SP1R4]

I just solved WingData on Hack The Box! https://t.co/dEk6a2nan5 #HackTheBox #HTB #CyberSecurity #EthicalHacking #InfoSec #PenTesting

[S. Markakis @_SP1R4]

I just solved Facts on Hack The Box! Standby for reading my writeup on my blog (https://t.co/y8xBIjrBIZ).💻https://t.co/MRDAuOsntw #HackTheBox #HTB #CyberSecurity #EthicalHacking #InfoSec #PenTesting

[S. Markakis @_SP1R4]

I just solved Silentium on Hack The Box! Stay tuned on my blog for the writeup(https://t.co/y8xBIjrBIZ)💻.
https://t.co/iEmyOmm3h2 #HackTheBox #HTB #CyberSecurity #EthicalHacking #InfoSec #PenTesting

[S. Markakis @_SP1R4]

I just solved Kobold on Hack The Box! Writeup soon on my blog https://t.co/y8xBIjrBIZ stay tuned💻https://t.co/YrSYx0zXwu #HackTheBox #HTB #CyberSecurity #EthicalHacking #InfoSec #PenTesting

[S. Markakis @_SP1R4]

🔒 BackupHandler — Open Source Backup Tool
Local · SSH · S3 · MySQL — all in one Python script.
✦ AES-256 encryption ✦ Deduplication ✦ Scheduled backups ✦ Telegram alerts
No bloat. No dependencies hell. Just backups that work.
https://t.co/A946uD5JdN
#Python #Backup #InfoSec

[S. Markakis @_SP1R4]

@thedawgyg 👏

[S. Markakis @_SP1R4]

@AIHighlight Claude

[S. Markakis @_SP1R4]

Been using Claude for pentesting and personal projects lately. Super helpful for script writing, vulnerability research, and breaking down complex attack chains. Makes documentation and reporting way less painful too. Highly recommend for security work 🔐
#cybersecurity #ClaudeAI

[tetsuo @tetsuoai]

"Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it."
- Brian Kernighan
https://t.co/wwMclUgRqi

[S. Markakis @_SP1R4]

I decided to pursue the MikroTik certs to test and validate my networking knowledge.
Happy to share that I’ve successfully passed the MTCNA exam
A solid foundation is now in place — time to go deeper and build on it.💻
#MTCNA #MikroTik #Networking

[S. Markakis @_SP1R4]

@karthikponna19 3

[S. Markakis @_SP1R4]

I just pwned Return on Hack The Box! https://t.co/8XI31qO9Ov #HackTheBox #HTB #CyberSecurity #EthicalHacking #InfoSec #PenTesting

[S. Markakis @_SP1R4]

I just pwned Sauna on Hack The Box! https://t.co/tTrKQusLk1 #HackTheBox #HTB #CyberSecurity #EthicalHacking #InfoSec #PenTesting