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Nano Security

Penetration testing

Nano precision. Maximum security.

Our engineers rank among the top Android researchers on HackerOne worldwide. We report and fix critical vulnerabilities — account takeover, remote code execution, logic flaws — for companies including Coinbase, Microsoft, Crypto.com, Wise, Wealthsimple, Lightspark, Brave, AT&T, OPPO and more, across mobile applications, web applications and source code.

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nanosec — pentest runbash

$ nanosec scan --target

  • [09:41:02] recon · 212 routes · 3 subdomains
  • [09:41:06] auth · token accepted from url param
  •   ↳ replayed from 2nd device — accepted
  • [09:41:09] done in 7.3s · 1 critical, 2 notes

critical full account takeover

Illustrative output, not a real scan

100+

vulnerabilities reported and fixed at companies including Fortune 500 companies

20+

companies secured from critical vulnerabilities

Top-ranked

Android researchers on HackerOne

What we do

We find what attackers find first.

We have reported and fixed account takeover vulnerabilities at companies including Coinbase, Crypto.com and Microsoft, with a focus on mobile and web applications. We also review source code for the bugs that matter most: remote code execution, authentication and authorization flaws, and logic errors that automated scanners miss. Our goal is simple: precise, attacker-minded security, delivered at the speed modern teams ship.

  • +Account takeover
  • +Remote code execution
  • +Source code vulnerabilities

Services

Testing that mirrors real attacks.

Every engagement is manual, scoped in writing and ends with a retest. We chain issues the way a real attacker would, then hand you fixes specific enough to ship.

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Mobile application penetration testing

Android-first, iOS-ready

Manual, attacker-minded testing of your mobile app: the attack surface Android exposes (exported components, deep links, WebViews, FileProviders, IPC), plus local storage, network traffic, authentication flows and how the app behaves on a hostile device.

  • Attack-surface map

    Every exported component, deep link and trust boundary, catalogued before testing begins.

  • Validated findings

    Severity and CVSS, real impact, reproduction steps a developer can follow.

  • Fix-first remediation

    Specific fixes per finding — not generic advice — verified in a retest.

AndroidiOSDeep linksWebViewsIPCStorage
1–3 weeks per app

Web application penetration testing

Beyond the scanner

Testing of authentication, session management, authorization and business logic against real attacker techniques — the class of flaws automated scanners consistently miss. API surfaces are tested with the same rigor as the UI.

  • Reproducible findings

    Each issue demonstrated end-to-end and ranked by the risk it creates for your users.

  • Business-logic review

    Authorization and workflow abuses traced through multi-step user journeys.

  • Fix-first remediation

    Prioritized fixes with code-level guidance, confirmed in a retest.

Web appsAPIsAuthBusiness logic
1–3 weeks per target

Source code review and analysis

The bugs scanners can't see

Manual review of your codebase for remote code execution, injection, broken access control and unsafe trust boundaries — traced from untrusted entry point to dangerous sink, the way a real attacker reads code.

  • Root-cause findings

    File and line references with the data flow that makes each issue exploitable.

  • Trust-boundary audit

    Where external input crosses into privileged code, and what should validate it.

  • Dependency check

    Known-vulnerable libraries and risky patterns flagged with upgrade guidance.

Multi-languageDependenciesSecretsTrust boundaries
Scoped per codebase

Network penetration testing

Exposure, mapped and closed

Assessment of internal and external network exposure: which services answer, which should not, and how far a foothold travels. Findings are prioritized as attack paths, not isolated port findings.

  • Attack paths

    Chained routes from exposed services to valuable targets, with the path broken at the cheapest link.

  • Exposure inventory

    What answers on your perimeter versus what your asset list says should.

  • Prioritized fixes

    Misconfigurations and hardening gaps ordered by real risk.

ExternalInternalServicesMisconfigurations
1–2 weeks per environment

Process

How an engagement runs

  1. 1

    Screening and exploratory call

    We learn what you build and what worries you.

  2. 2

    Scope assessment

    We size the work: targets, platforms, depth and timeline.

  3. 3

    Scope verification

    We confirm scope, access and rules of engagement in writing before any testing starts.

  4. 4

    Penetration testing

    Our engineers test manually, chaining issues the way a real attacker would.

  5. 5

    Report and fix recommendations

    A clear report with severity, impact, reproduction steps and specific remediation guidance.

  6. 6

    Retesting

    We verify your fixes and confirm the issues are closed.

Deliverable

What a finding looks like

Each finding in a report carries severity, impact and a specific fix.

Example finding (redacted)NS-0000
Title
Insecure deep link handling leads to session theft
Severity
Critical
CVSS
9.1
Impact
An attacker-controlled link can cause the app to send a valid session token to an external host, enabling account takeover.
Affected component
/
Recommended fix
Validate deep link hosts against a strict allowlist and never attach credentials to URLs derived from intent data.

Illustrative example, not a real client finding

Our Product

Our Product

IN DEVELOPMENT

Autonomous mobile application penetration tester

We are building an autonomous penetration tester for mobile applications, based on the same methodology our engineers use on engagements. It is in development. Join the early access list.

Recognition

What teams say

Thank you so much for your report. We are awarding $4,000 for this High severity issue, and since the consequences were very serious for our users, we are rewarding on the high side of our High Severity band. Thanks again for your report, and we look forward to your future reports.
Bug Bounty Team / Lightning Network infrastructure, Lightspark
Thanks again for your thorough research and clear communication throughout this process.
Security Team / Earned wage access platform, DailyPay
Your sharp eye and the time you invest in verifying these issues genuinely strengthen our platform — we look forward to your continued research.
Security Team / Exchange & payments platform, Crypto.com
We really appreciate the careful analysis and comparisons to similar cases. This kind of input helps improve the overall safety of our ecosystem even when it's not directly exploitable in our environment.
Security Team / Crypto exchange & Web3 infrastructure, Coinbase

Received from security teams at these bug bounty programs in response to vulnerability reports.

Research

Latest from the blog

All posts

8 min read

One tap, no trace: silent KYC image exfiltration from Android apps

How an exported cropping activity, an over-broad FileProvider and an Android IPC blind spot combine to let a co-installed app silently steal cached KYC document images from fintech apps — and how to close all three holes.

android / kyc / fileprovider / sandbox-escapeRead

8 min read

Minted URLs, untrusted fetches: full-read SSRF through on-chain NFT metadata

How an NFT metadata proxy running behind a major browser's wallet feature fetched attacker-chosen URLs straight from on-chain data, unauthenticated, and reflected the responses back — a full-read SSRF one hop from cloud IAM credentials. Class-level write-up, vendor redacted.

ssrf / nft / solana / cloudRead

Contact

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Tell us what you want tested. We reply within one business day.

abdullah@nano-security.com
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