Wallet Security

Wallets are the front door to user funds. We audit key management, signing correctness, transaction validation, and the user interaction points where attackers reliably win.

What we cover

  • Key and secret handling (storage, lifecycle, exposure paths)

  • Signing flows and transaction validation

  • Network and RPC trust assumptions

  • Recovery mechanisms and account safety

  • Multi-device and session logic

  • Monitoring and incident response readiness

Common Failure Modes

Key compromise paths

Key compromise paths

  • Secrets leaking through logs/storage/backups
  • Weak OS-level protection assumptions
  • Unsafe “convenience” features that expose keys
Signing and validation gaps

Signing and validation gaps

  • Blind signing UX pitfalls
  • Incomplete transaction simulation/preview
  • Missing protections against malicious dapps
Integration and trust assumptions

Integration and trust assumptions

  • RPC tampering and response trust
  • Extension/app boundary issues
  • Weak permission and isolation models

How we work

01

Threat model

Threat model

phishing, malware, hostile dapps, hostile networks

02

Flow review

Flow review

sign/submit/recover lifecycle

03

Abuse testing

Abuse testing

tamper inputs and verify protections

04

Security posture review

Security posture review

monitoring and response readiness

05

Report

Report

user-loss narratives and fix priorities

Tools and Standards

Core Tooling

  • Threat modeling discipline aligned to ATT&CK
  • Secure engineering alignment using SSDF
  • Targeted mobile/tooling for wallet clients where relevant
  • Controlled exploitation and validation methods

Outputs

  • Executive summary + engineering appendix
PortswiggerGithubMitreOWASP

What we map to

  • Key safety invariants
  • “No unauthorized signing” guarantees
Background

Deliverables

Securing High-Impact Enterprise System

What Our Clients Trust us with

Client Video

We partnered with ImmuneBytes for a security audit of our products. Their expertise and professionalism instilled confidence throughout the process. They promptly addressed our questions, and their thorough analysis significantly enhanced our project's security, safeguarding our users' assets. We highly recommend ImmuneBytes and look forward to future collaborations.

Aruje Jahan

Lokr, Product Owner

ImmuneBytes demonstrated the perfect blend of expertise, commitment, and accountability, resulting in an audit that surpassed expectations. Their thorough approach and dedication ensured a high-quality outcome, reflecting their capability and professionalism in delivering exceptional service.

Dheeraj Borra

Stader Labs, Co-Founder

Robots can do audits, but the personal touch makes a difference. That's why we love Immunebytes! Not only do they do top-class audits, but they also take the time to understand our project and why certain things are done in specific ways. They take the time to ensure we feel heard, which shows in their work.

Yog Shrusti

Farmsent, Co-Founder & CEO

We are thoroughly impressed by their team, who left no scope for a communication gap and provided a quick turnaround time. They took up each requirement with utmost detail and acted on it. It was a pleasing experience to work with you. Looking to working with you guys again!

Mac P

Ethernity, Chief Engineer

What You Need to Know?

Frequently Asked Questions

We review private key storage, transaction signing, recovery mechanisms, multi-sig logic, upgrade controls, and integration security. One bug in a wallet can drain all user funds—stakes are maximum.

We verify that private keys are encrypted at rest, never logged, and only decrypted in secure enclaves when needed. We test for key leakage through memory dumps, log files, or network traffic.

Custodial wallets: Centralized key management Non-custodial wallets: User-controlled keys Multi-sig wallets: Threshold signing MPC wallets: Distributed key generation.Each has different attack surfaces.

We test signature validation, replay resistance, transaction batching logic, and authorization checks. If we can trick the wallet into signing unauthorized transactions, we flag it.

We verify that seed phrases are generated securely (proper entropy), stored safely, and recovery flows can't be hijacked. Weak recovery mechanisms are a common attack vector.

We simulate malicious dApps trying to trick wallets into signing bad transactions, phishing for approvals, or exploiting blind signing. Wallet UX must make attacks visible to users.

Critical findings (fund loss risks), authorization bugs, key leakage vectors, recovery hijacking scenarios, fix recommendations, and retest confirmation after fixes are applied.

Secure Systems

Let’s Evaluate Risks and Secure your Systems

+917303699708team@immunebytes.com
Immunebytes

A blockchain security audit firm with the goal of making the Web3 space more secure through innovative and effective solutions.

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