> sys.identity // 51.51°N, 0.13°W

Giuseppe
Giona.dev

Mathematician turned engineer. I build

byte-level PDF processors

View latest project LinkedIn

lines.ts

tests.pass

papers.cited

projects

02 / Projects

Shipped work

Open source. Source code and tests included.

Web Appupdated Mar 2026

PDF Changer

21 browser-only PDF tools with a verified processing environment. CSP-enforced network isolation, triple-monitor integrity chain, cryptographic audit trail. Passkey auth, offline entitlements.

21tools

299tests

29klines

ReactCloudflare WorkersWebAuthnpdf-libWeb Crypto

live at pdfchanger.org

Security Auditupdated Mar 2026

beacon

Business security surface scanner. 7 scanners check TLS, headers, email authentication, exposed files, third-party tracking, and form security. Every finding maps to a documented breach where the same weakness was exploited. 100 verified precedents with cited sources.

100precedents

50tests

7scanners

TypeScriptNode.jsTLSDNSOWASP

live at github.com/Giuseppe552/beacon

Encrypted Transferupdated Mar 2026

vault

Encrypted document exchange. Files encrypted client-side with AES-256-GCM before upload. The server stores ciphertext only. Key lives in the URL fragment, never sent to the server. Research-first: 9 security documents written before any code, covering the Mega breach, Firefox Send shutdown, and the code delivery problem.

23tests

9research docs

0crypto deps

AES-256-GCMHKDF-SHA256Web Crypto APICloudflare WorkersR2

live at github.com/Giuseppe552/vault

Security Toolupdated Mar 2026

threadr

Open source reconnaissance tool for security teams and penetration testers. 17 data source plugins, 5 analytics engines (Dempster-Shafer, spectral clustering, Katz centrality), request timing designed to resist statistical detection.

17plugins

282tests

5analytics

ReactNeo4jHonoBullMQTypeScript

live at github.com/Giuseppe552/threadr

Privacy Toolupdated Mar 2026

degauss

Identity exposure quantification. Scans 35 platforms for your accounts, measures exposure in bits (Shannon entropy, Fellegi-Sunter record linkage), maps the data broker supply chain as a directed graph, computes optimal removal order.

303tests

5.7klines

11attack scenarios

TypeScriptInformation TheoryFellegi-SunterGraph Theory

live at github.com/Giuseppe552/degauss

Crypto Researchupdated Mar 2026

ε-tx

Privacy analysis for cryptocurrency transactions. 8 attack surfaces, Dempster-Shafer evidence fusion, adversary models, inverse-OSPEAD for Monero, Boltzmann entropy for CoinJoins. Started as a maths dissertation.

8attack surfaces

340tests

18papers cited

TypeScriptInformation TheoryBitcoinMoneroLightning

live at github.com/Giuseppe552/epsilon-tx

More projects in progress

03 / Writing