Bitmarket Hack

TOTAL LOST $27.1M
High #185 All-Time Rugpull

Summarize with AI

Affected Chain 2019 Incident surface
Recovered - No recovery reported
All-Time Rank #185 By amount stolen
Protocol Type CEX Target category

Incident Overview

Bitmarket, a Polish cryptocurrency exchange, abruptly ceased operations due to a loss of liquidity.

In the days leading up to the cessation of operations, Bitmarket enforced mandatory changes to user passwords and API keys. Additionally, all withdrawals were halted under the pretext of additional KYC requirements. The abrupt closure of the exchange left users in the dark, with many speculating about the possible reasons behind the sudden loss of liquidity.

Incident Report

Protocol / Project Bitmarket
Date of Incident
Attack Technique Rugpull
Classification CeFi

Protocol Information

Protocol Type CEX
Official Website bitmarket.pl/
Protocol Twitter/X @BitMartExchange
Team Anonymous
Source Code Unverified

Market Context at Time of Hack

Token Categories
Polygon Ecosystem

What the Attacker Needed to Succeed

Understanding the prerequisites for this type of attack helps auditors identify protocols that are most at risk and helps developers build better defenses.

Technical Knowledge Deep understanding of rugpull and Solidity and EVM internals
Capital Required Seed capital to cover gas and initial position setup
On-Chain Access Ability to interact with smart contracts and deploy a custom exploit contract
Protocol Analysis Identification of the exploitable vulnerability in Bitmarket's contract logic - root cause: cefi
Execution Speed Precise transaction ordering and timing to exploit the vulnerability within a single atomic block
Obfuscation Plan A strategy to launder and move stolen funds - typically through mixers, cross-chain bridges, or decentralized DEX swaps to resist tracing

What Auditors Should Check

Could this have been caught in audit? Hard to catch — private key / OpSec failures are outside smart contract audit scope

If you're auditing a protocol with similar architecture to Bitmarket, these are the critical security checks that could have prevented this incident (July 2019).

  • Verify all logic paths related to Rugpull are guarded by proper access controls and input validation
  • Review privileged functions (owner, admin, governance) for potential abuse vectors - centralization risks should be documented and bounded with timelocks or multi-sigs

Master these auditing techniques with hands-on labs and real exploit scenarios in the Smart Contract Hacking course.

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Sources & References

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