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@earbona23

Eduard Arbona

earbona23
Dominican Republic

I build and maintain open-source security tooling for the Microsoft identity plane Entra ID, Azure, Microsoft 365 and I contribute fixes upstream to the tools this ecosystem runs on: CISA's ScubaGear, Microsoft's own Graph SDKs, SpecterOps' BloodHound, DataDog's cloud security tooling, and Maester.

Everything I publish follows one rule: it is read-only by construction, it reports three outcomes instead of two clean, finding, or "could not check" and it states plainly what it cannot do. A security tool that hides its blind spots is worse than no tool.

Sponsorship keeps this work maintained and independent, and funds the identity-security tooling I am building next. Every tool stays free and MIT-licensed.

@earbona23

Eaching 10 sponsors would help me keep this identity-security tooling maintained and independent.

Featured work

  1. earbona23/containment-cut

    Everyone tells you your blast radius. This computes the minimum-cost set of actions that provably severs a compromised identity from the crown jewels — with a max-flow optimality certificate.

    Python 1
  2. earbona23/revtriage

    Offline reverse-engineering triage. Capability graph, IOCs with provenance, an explainable threat score and a STIX 2.1 bundle from a suspicious file. Nothing is uploaded, ever. Zero dependencies.

    Python 1
  3. earbona23/entra-tripwire

    Deception-based intrusion detection for Microsoft Entra ID. Plant decoy identities, apps and credentials nothing legitimate should touch; score whoever does, before it reaches a human.

    PowerShell 1
  4. earbona23/m365-command-center

    Read-only security command center for Microsoft 365 / Entra ID: failed logins, risky users, service health, mail exfiltration and device locations on one page. Runs on synthetic data with zero setup.

    Python 1

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