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Shivacha Web3Web3 Security Engineering

DeFi Security

DeFi-specific security — oracle manipulation, flash loan attacks, liquidation risk and composability threats.

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Security controls · production
Illustrative

  1. Identity

    SSOMFAPasskeys

  2. Access control

    RBACLeast privilegeJust-in-time

  3. Secrets

    VaultRotationNo secrets in code

  4. Encryption

    TLS in transitEncrypted at rest

  5. Monitoring

    Audit logAlertsThreat detection

Audit events

  • login.mfa.success

    user · passkey

  • role.granted

    approved by 2nd admin

  • secret.rotated

    db-credentials

  • anomaly.flagged

    unusual geo → ticket

Overview

DeFi protocols face attacks unique to composable finance: flash-loan-powered manipulation, oracle attacks, sandwich and MEV exploitation, liquidation cascades, governance takeovers and risks inherited from integrated protocols. We assess DeFi protocols for these threats, test attack scenarios on forks and recommend mechanism and parameter changes.

Common use cases

  • Pre-launch DeFi reviewAttack scenario testing before launch.
  • New integration reviewRisk of integrating external protocols.
  • Oracle hardeningImproving price feed robustness.
  • Parameter securityParameters resistant to manipulation.

Quick answers

DeFi Security at a glance

The essentials in brief. Every project is scoped individually — ask us for specifics.

What is DeFi security?
DeFi-specific security — oracle manipulation, flash loan attacks, liquidation risk and composability threats.
Who is it for?
Typically Web3 startups, fintechs adding digital assets, and institutions exploring tokenization, stablecoins or on-chain settlement.
What does Shivacha provide?
  • Attack simulation
  • Oracle analysis
  • Flash loan scenarios
  • MEV analysis
  • Composability review
  • Recommendations
Which technologies are used?
Solidity, Foundry, OpenZeppelin, MPC Cryptography, OWASP, Prometheus — chosen to fit your stack and constraints.
How does the process work?
Scope → Threat modelling → Review & testing → Remediation → Operate.
What affects the cost?
  • Contract complexity and number of chains
  • Custody and wallet model
  • Independent audit scope
  • Indexing, analytics and back-office tooling
  • Compliance integrations (KYC, AML, Travel Rule)
  • Upgradeability and governance requirements
How long does it take?
A focused contract system or dApp MVP typically takes 8–14 weeks plus independent audit time; institutional platforms usually take 4–9 months.
How do I get started?
Share a short brief in the form below, book a 30-minute call or message us on WhatsApp. A senior engineer replies within one business day; NDA on request.

Capabilities

What we deliver

Attack simulation

Fork-based attack testing.

Oracle analysis

Manipulation cost modelling.

Flash loan scenarios

Capital-free attack testing.

MEV analysis

Extractable value risks.

Composability review

Dependency risks.

Recommendations

Mechanism and parameter fixes.

Architecture

Engineered right from day one

The layers we typically design for Web3 security engineering, adapted to your stack and partners.

  • Independent audits still matterOur work prepares for, and complements, third-party audits.
  • Beyond the contractMany losses come from keys, frontends and operations, not code.
  • Economic securityOracle manipulation and incentive attacks modelled explicitly.
  • Response readinessPausing, upgrades and communication planned before incidents.
Web3 Security Engineering · reference architecture
5Design
Threat modelsTrust assumptionsEconomic risk
4Code
Contract reviewStatic analysisFuzzing
3Keys
Custody designSigning policiesCeremonies
2Infrastructure
RPC & node hardeningFrontend integrityDNS
1Operations
MonitoringPause mechanismsIncident response

Delivery

How an engagement runs

  1. 1

    Scope

    Assets at risk, components and adversaries.

  2. 2

    Threat modelling

    Attack trees across contracts, keys, infrastructure and economics.

  3. 3

    Review & testing

    Code review, fuzzing, invariant testing and infrastructure checks.

  4. 4

    Remediation

    Prioritised findings and fixes, re-tested.

  5. 5

    Operate

    Monitoring, alerting and incident runbooks.

Security

Security built into delivery

Controls we apply by default on this kind of work — not a separate phase at the end.

Specification first

Roles, invariants and threat model documented before code.

Adversarial testing

Fuzz, invariant and fork tests plus static analysis on every change.

Key management

Admin keys in multisig or MPC with timelocks on sensitive actions.

Independent audit

Code prepared for — and we recommend — an external audit before mainnet value.

Technology

Tools we use for this

SolidityFoundryOpenZeppelinMPC CryptographyOWASPPrometheus
Industries:
FinTechGamingEnterprise

Products

Start from a platform

All products
DeFi

Shivacha DeFi Platform

Modular DeFi: swaps, lending, vaults and staking with risk controls built in.

Learn more
Wallet

Shivacha Crypto Wallet

Custodial or MPC wallets for fintech products and exchanges.

Learn more

Related services

Often combined with

Web3 Security Engineering

Web3 Security Engineering

Holistic Web3 security — contracts, keys, infrastructure, frontends and operations — engineered and tested.

Learn more
Web3 Security Engineering

Web3 Threat Modeling

Structured threat modelling for Web3 systems — assets, adversaries, attack paths and prioritised mitigations.

Learn more
Web3 Security Engineering

Protocol Security

Protocol-level security engineering — consensus, bridges, oracles, upgrades and economic security.

Learn more

Dedicated team

Smart Contract Team

Audit-ready smart contract engineers for tokens, DeFi and tokenization.

View teamBuild This Team

Work & insights

Related thinking

Reference architecture

Policy-controlled institutional digital asset operations

A reference design for institutions that need every digital asset transaction initiated, approved and signed under explicit policy.

Learn more
Reference architecture

Tokenized fund units with on-chain eligibility

How we structure a fund tokenization platform where only eligible investors can hold or receive units.

Learn more
Insight · 7 min

Most breaches start with identity: where to focus security effort first

Before advanced tooling, get identity right: phishing-resistant MFA, least privilege, secrets out of code and logs you can actually search.

Learn more

FAQ

Frequently asked questions

What is a flash loan attack?

An attack using uncollateralised loans within one transaction to manipulate prices or protocol state temporarily.

Can attacks be simulated safely?

Yes, on mainnet forks without affecting live funds.

Is this the same as a smart contract audit?

No. We provide security engineering, internal review and audit preparation. For production contracts holding meaningful value, independent audits by specialist firms remain essential.

Do you monitor deployed contracts?

Yes. We set up on-chain monitoring and alerting for anomalous transactions, privileged function calls and parameter changes.

Next step

Discuss Your Blockchain Project.

Tell us about your DeFi security requirements — goals, timeline and constraints. We will reply with questions, an approach and next steps.

  • Senior engineer reads every enquiry
  • Reply within one business day
  • NDA on request

Prefer to talk first?

Book a 30-minute call, or message the nearest team on WhatsApp.

Book a Call

Your details are used only to reply to this enquiry.

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