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jarpex/README.md

Anastasia Shebalkina

Product Security Architect · Security Researcher · Purple R&D

Everything you build — sucks. Lucky for you, I know how to suckless.

Independent Security Architect with dual degrees in Computer Engineering and Information Security. Former Lead Fullstack Engineer, DevSecOps, and Technical Project Manager (including Critical Information Infrastructure).

My work follows the Security by Subtraction principle: eliminating systemic complexity instead of adding abstraction layers. Operating across the full stack — from bare-metal, OS internals, and core C libraries up to application logic, CI/CD pipelines, and business processes — I evaluate and design architectures with an adversarial mindset.

Core focus:

  • Product Security Architecture — I simplify complex systems by eliminating architectural waste instead of stacking third-party defensive layers. By removing non-operational bloat, I reduce vulnerability noise, streamline SBOM/VEX compliance, and drastically lower operational expenditure (OpEx) while achieving mathematical determinism.
  • Low-Level & Runtime Hardening — Enforcing strict execution boundaries and OS-level isolation (seccomp-bpf, Landlock, dm-verity, W^X, read-only squashfs). Expertise in low-level runtime edge cases (glibc vs musl, dynamic vs static linking illusions), toolchain-level attack surface reduction (DCE, LTO, CFI, -fno-exceptions), and kernel/binary-level stripping.
  • Adversarial Research & Audits — Identification of structural design flaws, broken isolation, and complex logic vulnerabilities in web, mobile, and Web3 environments.

Selected work

The Static Linking Illusion — OFFZONE 2026
Showed how default glibc NSS dispatcher silently breaks self-contained isolation in OT/ICS and distroless builds by dynamic loading of host .so libraries inside "static" binaries. Includes a working PoC for ACE in static binaries. Acknowledged by Red Hat Product Security.
Research · PoC

CVE-2023-4911 (Looney Tunables)
Rewrote the LPE exploit in pure C with multi-process brute-forcing, dynamic calibration, and integrated ELF parser. Ported to AArch64 with adaptive ASLR bypass.
x86_64 · ARM64 · Exploit

spotlight-js
Zero-dependency image gallery under 9 kB brotli. Native trackpad gestures, touch, keyboard navigation.
Repository

Tools and contributions
Minimal systems tools: siligpu (Apple Silicon GPU telemetry in Rust), uc (unicode cleaner in C). Fullstack Shift-Left SSDLC reference implementation (ssdlc-fastapi-backend & ssdlc-svelte-frontend) featuring K3s self-hosted runners, Vault dynamic secret injection, Kaniko daemonless builds, automated SAST/DAST (CodeQL, Semgrep, ZAP), and SARIF dashboard integration. Upstream contributions to bt and Runtime Radar.


If you also believe that complexity is the ultimate vulnerability — let's connect.

jarpex.com · blog.jarpex.com · Telegram Blog · LinkedIn

Pinned Loading

  1. glibc-static-nss-poc glibc-static-nss-poc Public

    Presented at OFFZONE 2026; PoC: glibc 2.34+ (modern Linux distros) static binaries still trigger dlopen() via libnss_*.so.2 modules

    Shell 1

  2. spotlight-js spotlight-js Public

    🌅 Tiny, self-contained gallery for any webpage — trackpad gestures, touch, and keyboard friendly (<9 kB brotli).

    JavaScript 5 2

  3. siligpu siligpu Public

    📊 A minimal Rust-based CLI tool for measuring Apple Silicon GPU usage in snapshot form using IOReport.

    Rust 5

  4. neorand neorand Public archive

    🧊 Archived legacy snapshot (v0.6.56, 2019). High-performance CUDA quasi-random number generator for Monte Carlo simulations. Originally developed and statistically validated for the NVIDIA Tesla P1…

    Cuda 1

  5. ssdlc-fastapi-backend ssdlc-fastapi-backend Public

    Secure FastAPI backend implementation featuring a complete Shift-Left SSDLC framework and an automated DevSecOps pipeline (K3s, HashiCorp Vault, Semgrep, Kaniko, OWASP ZAP). Completed in 2025.

    Python 2

  6. ssdlc-svelte-frontend ssdlc-svelte-frontend Public

    Svelte + TS frontend for a custom task management UX. Built as an SSDLC reference implementation with an Nginx Alpine container layout and a Shift-Left DevSecOps pipeline. Completed in 2025.

    Svelte 1