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aitbc/docs/security/audit-preparation-summary.md
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ci: standardize pytest invocation and add security scanning
- Changed pytest calls to use `venv/bin/python -m pytest` with explicit config
- Added `--rootdir "$PWD"` and `--import-mode=importlib` for consistent imports
- Fixed PYTHONPATH to use absolute paths with $PWD prefix
- Added smart contract security scanning for Solidity files
- Added Circom circuit security checks for ZK proof circuits
- Added ZK proof implementation security validation
- Added contracts/** to security scanning workflow
2026-05-11 13:46:42 +02:00

5.2 KiB

Smart Contract Security Audit Preparation

Date: May 11, 2026 Audit Scope: Smart Contract Security Sprint Findings

Overview

This document summarizes the security enhancements implemented during the Smart Contract Security Sprint, covering 8 findings (5 High severity, 3 Medium severity) across 3 smart contracts.

Contracts Modified

  1. AgentStaking.sol - Staking mechanism with slashing and oracle protection
  2. AIServiceAMM.sol - Automated Market Maker with flash loan and front-running protection
  3. EscrowService.sol - Escrow service with multi-oracle verification and voting thresholds

High Severity Findings (5)

SC-H-01: No Slashing Mechanism in AgentStaking.sol

Status: Implemented and Tested

Changes:

  • Added manual slashing by owner with percentage-based penalty
  • Implemented automatic slashing based on accuracy thresholds (default 50%)
  • Implemented automatic slashing based on missed jobs (default 5 max)
  • Added appeal process with 7-day window
  • Added reporter rewards (5% of slashed amount)
  • Added custom slashing condition configuration

Testing: 27 unit tests passing

SC-H-02: Lack of Oracle Manipulation Protection in AgentStaking.sol

Status: Implemented and Tested

Changes:

  • Implemented authorized oracle list management
  • Added signature verification using OpenZeppelin ECDSA
  • Added nonce validation for oracle updates
  • Implemented time delay for performance updates (1 hour default)
  • Added oracle rotation mechanism (30 day period)
  • Added oracle reputation scoring system

Testing: 27 unit tests passing

SC-H-03: AMM Vulnerable to Flash Loan Attacks in AIServiceAMM.sol

Status: Implemented

Changes:

  • Implemented TWAP (Time-Weighted Average Price) oracle
  • Added price deviation limits (5% default)
  • Implemented flash loan detection
  • Added minimum swap delay (1 second default)
  • Implemented circuit breaker for abnormal price movements
  • Added circuit breaker cooldown (1 hour default)

SC-H-04: No Front-Running Protection in AIServiceAMM.sol

Status: Implemented

Changes:

  • Implemented commit-reveal scheme for large trades
  • Added large trade threshold (1e18 tokens)
  • Added price impact limits (3% default)
  • Added commit-reveal window (5 minutes default)
  • Added batch execution delay (10 seconds default)

SC-H-05: Emergency Withdraw Without Timelock in AIServiceAMM.sol

Status: Implemented

Changes:

  • Added 48-hour timelock for emergency withdrawals
  • Implemented two-step execution (schedule + execute)
  • Added cancellation mechanism for pending withdrawals
  • Deprecated old emergencyWithdraw function
  • Added timelock configuration (1 hour minimum, 7 days maximum)

Medium Severity Findings (3)

SC-M-01: Oracle Single Point of Failure in EscrowService.sol

Status: Implemented

Changes:

  • Implemented multi-oracle verification with threshold (2/3 default)
  • Added separate oracle verification mappings to avoid nested mappings
  • Added time delay after oracle verification before release (1 hour default)
  • Added oracle authorization management
  • Added verification threshold configuration
  • Added verification delay configuration

SC-M-02: No Minimum Voting Threshold for Emergency Release in EscrowService.sol

Status: Implemented

Changes:

  • Implemented percentage-based voting threshold (66% default)
  • Added minimum quorum requirement (3 arbiters default)
  • Added time lock after approval before execution (1 hour default)
  • Replaced simple majority with percentage-based approval
  • Added voting threshold configuration
  • Added quorum configuration
  • Added timelock configuration

SC-M-03: No Rate Limiting on Staking Operations in AgentStaking.sol

Status: Implemented

Changes:

  • Added maximum stakes per day (10 default)
  • Added maximum total stakes per user (50 default)
  • Added stake cooldown (1 minute default)
  • Implemented daily stake count reset
  • Implemented cooldown enforcement
  • Added rate limiting configuration functions

Test Coverage

AgentStaking.sol Security Tests:

  • 27 unit tests covering slashing mechanism and oracle protection
  • All tests passing

Compilation Status:

  • All contracts compile successfully
  • No critical warnings

Files Modified

  1. /opt/aitbc/contracts/contracts/AgentStaking.sol
  2. /opt/aitbc/contracts/contracts/AIServiceAMM.sol
  3. /opt/aitbc/contracts/contracts/EscrowService.sol
  4. /opt/aitbc/contracts/test/AgentStakingSecurity.test.js (new test file)

Deployment Status

  • All security enhancements implemented
  • Smart contracts compiled and tested
  • Awaiting testnet deployment of AIToken.sol
  • Coordinator-api service restarted successfully
  1. CertiK - Comprehensive smart contract audits
  2. Trail of Bits - Deep security analysis
  3. OpenZeppelin - Industry-standard security reviews
  4. ConsenSys Diligence - Enterprise-grade audits

Audit Deliverables Required

  1. Smart contract source code (all modified files)
  2. Test suite results
  3. This security enhancement summary
  4. Deployment configuration
  5. Threat model documentation

Next Steps

  1. Select audit firm
  2. Prepare code package for submission
  3. Schedule audit timeline
  4. Complete testnet deployment
  5. Address any audit findings