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Company

Company details

Demonic Binary is a California engineering practice working across mobile apps, backend services, and security review.

Company details

Overview

What this practice covers

Factual company details, scope, and working boundaries.

Engineering work

Mobile and backend work for teams dealing with brittle releases, risky account flows, migration risk, or code that has become hard to change safely.

Security work

Reviews of auth flows, session handling, secrets handling, backend authorization, release paths, and abuse cases tied to real systems.

Engagement style

Small, scoped starts. Clear outputs. Code changes and verification steps when the work calls for them.

Focus

Focus areas

These are the areas where Demonic Binary spends the most time.

Mobile platforms

iOS and Android delivery with architecture discipline, reliability, and release safety.

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Backend and platform systems

APIs, authorization, environment separation, deployments, and operational maturity for mobile products.

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Security engineering

Threat modeling, auth and token lifecycle review, abuse resistance, and implementation-level remediation.

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Reverse engineering and malware analysis

Defensive analysis and interpretation that informs mitigations, detection, and hardening decisions.

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AI/ML evaluation and systems

Applied AI/LLM work with attention to cost, privacy, reliability, and misuse-resistant boundaries.

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Hardware and embedded work (select)

When relevant to a product surface: device integrity signals, interfaces, and embedded system constraints.

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Trust

Security, scope, and responsible boundaries

Security work is performed as professional services with explicit authorization and scope. The goal is mitigation and hardening, not theatrics.

What we do

  • Architecture and boundary reviews across app and backend
  • Implementation-level security review with remediation planning
  • Authorized adversarial validation for owned or explicitly authorized systems
  • Operational hardening: telemetry, release safety, and incident readiness

What we do not do

  • Unauthorized intrusion or access
  • Work without explicit ownership or authorization
  • Vague “testing” requests with no system context
Careful telemetry

We care about observability, but avoid creating new exposure through logs, crash reports, or analytics payloads.

NDA-friendly process

Engagements can begin under NDA with shared context and clear access boundaries.

Operational readiness

The work covers release safety, incident response, rollback planning, and the controls teams need once the product is live.

Next step

Need a clear starting point?

Bring the system, the deadline, and the parts that worry you. Demonic Binary will recommend a sensible first step.