k.KrishnarjunSECURITY / SYSTEMS / SIGNALS
A PERSONAL LOG BY KRISHNARJUN

Cybersecurity
Engineer.

My experience spans security operations, cloud security, and application security. I build detections, investigate threats, assess vulnerabilities, and strengthen identity and access controls. I’m curious by nature, and this site is also where I log my hobbies, experiments, and discoveries beyond work.

  • M.Eng. Cybersecurity · University of Maryland
  • CompTIA CySA+ · Security+
Explore my projects A little about me
01 — EXPERIMENT02 — EXPLORE03 — DOCUMENT
Krishnarjun in professional attire.
THINGS I KEEP COMING BACK TO
CybersecurityRF & wirelessElectric unicycle adventuresGood stories
01 / SECURITY PROJECTS

Ideas, in the making.

Experiments, things I’ve built,
and questions worth chasing.

Completed01
Security

Catching permission drift

A project exploring role-based access drift, least privilege, and remediation across cloud and Kubernetes environments.

IAMKubernetesAutomation
Completed02
Security

Agents & security boundaries

Notes from work on MCP, agentic AI, and sandboxing — exploring how tools and permissions shape an agent’s reach.

MCPAI securitySandboxing
In progress03
Hardware

Inside the BLE lab

Two experiments with the BLEShark Nano and its Rust SDK: Wi-Fi RSSI motion detection and a custom BLE/GATT inspection tool.

BluetoothRustHardware
02 / ABOUT & COMMUNITY

Learning beyond the screen.

I enjoy turning questions into hands-on experiments and documenting what I discover. Conferences and community events give me another way to explore new ideas and connect with people who share those interests.

COMMUNITY / VOLUNTEERING

Cybersecurity conference volunteer

Across these conferences, I supported security operations, attendee check-in, and speaker introductions.

  • BSidesCharmVolunteer
  • BSides Las VegasVolunteer
  • 17th Annual Billington CyberSecurity SummitVolunteer
View my conference involvement

Away from the screen, you’ll find me riding my electric unicycle, exploring museums, or getting lost in a good game and its soundtrack. This site is a place to keep the experiments, discoveries, and unfinished ideas along the way.

03 / HOBBIES & TOOLS

Same curiosity.
Different terrain.

Explore the hobbies, tools, and stories that keep life interesting.

Coffee and compact electronic devices on a café table.
Coffee, circuits, and curiosity.

My Hardware Workbench.

07 DEVICES

I enjoy exploring custom firmware and discovering how much more the hardware can do.

From the workbench: BLE lab notes

Learning & community

Security

Behind the systems.

Security tools, lab notes, and questions worth investigating.

Explore security Hardware

RF & wireless exploration

BLE experiments, software-defined radio, and wardriving—exploring the wireless signals around us.

Explore hardware Exploring

Follow the interesting.

Cybersecurity conferences, community volunteering, museums, and unexpected discoveries.

Explore exploring

Beyond work

FPV

FPV drone adventures.

DJI Avata 2 flights, with cinematic train-following shots and waterfall dives on my list.

Explore fpv Riding

Electric unicycle adventures.

City rides on my Sherman Max, new routes, and seeing the streets a little differently.

Explore riding Gaming

Stories that stay.

Games, soundtracks, and worlds worth getting lost in. GeoGuessr: level 71 · highest rank Gold I.

Explore gaming
04 / THE SHORTLIST

On my radar.

Gadgets and tools worth a closer look.
A few possibilities for the next experiment.