Roll Hack

TOTAL LOST $5.7M
Medium Private Key Compromised (Unknown Method) / Access Control ethereum

Summarize with AI

ChatGPT Perplexity Claude Grok
Affected Chain ethereum Incident surface
Recovered $750K 13.2% returned
All-Time Rank #411 By amount stolen
Auditors 1 Prior security audit

Incident Overview

The attacker's address:

https://etherscan.io/address/0x5fe4e712…be0167

The attacker's deployed smart contract:

https://etherscan.io/address/0xeaa86ddd…87bd9a

The attacker was able to gain access to the private keys of Roll’s hot wallet and steal social money stored in that address. The attacker then sold all the tokens on Uniswap for ETH and transferred the ETH to Tornado Cash.

The list of tokens that were affected: WHALE, FWB, KARMA, JULIEN, 1337, MORK, CHERRY, FAMILY, BEAR, SKULL, LADZ, RARE, ALEX, PICA, BAEPAY, SWAGG, KERMAN, CAMI, HUE, OSINA, ATS, GOB, ARKE, SCOTT, JAMM, FIRST, PAUL, DSGN, JOON, CALVIN, WGM, BPC, ALXO, YUMI, PIXEL, RDR, BONES, GCASH, FORCER, PYGOZ, TING, HERO.

The transactions of the token withdrawals:

https://etherscan.io/tx/0xc4b1d59c…b55d9a

https://etherscan.io/tx/0x5ebcf5b1…ccce3c

https://etherscan.io/tx/0xb35f41c3…d21f9e

Stolen funds were deposited into Tornado Cash mixer at:

https://bloxy.info/txs/calls_from/0x5fe4e712…be0167?date=clear&signature_id=994162&smart_contract_address_bin=0x905b63ff…ec7601

This is classified as a Access Control Attacks . Compare similar hacks →

Incident Report

Protocol / Project Roll
Date of Incident
Affected Chain(s) ethereum
Attack Technique Private Key Compromised (Unknown Method) / Access Control
Classification Infrastructure / Other
Primary Source View Post-Mortem

Protocol Information

Protocol Type Derivatives
Official Website tryroll.com/
Protocol Twitter/X @tryrollhq
Team Anonymous
Source Code Unverified

Market Context at Time of Hack

Token Categories
Privacy Zero Knowledge Proofs Binance Launchpool Layer 2 Scroll Ecosystem Binance Ecosystem Binance Listing
Protocol Links
GitHub Discord

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 Operational-security tradecraft (phishing, malware, leaked seed phrases, or insider access) to obtain treasury signing authority
Capital Required Minimal capital - only enough to cover gas while draining the compromised accounts
On-Chain Access Valid signing authority over the compromised wallets / multisig signers, allowing direct transfer of funds or stake authorization
Target Reconnaissance Identification of Roll's high-value treasury accounts and the authority / multisig structure controlling them
Execution Speed Speed to drain the compromised accounts before the team detects the breach and revokes signing authority or freezes the assets
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
Audited by Audit Report 1 — still lost $5.7M. Prior audits don't guarantee safety, especially after post-audit code changes.

If you're auditing a protocol with similar architecture to Roll, these are the critical security checks that could have prevented this incident (March 2021).

  • Verify all logic paths related to Private Key Compromised (Unknown Method) / Access Control are guarded by proper access controls and input validation - see the Access Control Attacks attack class for patterns
  • 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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Funds Recovery

13.2%

Recovered

$750K

Net Loss

4947600

Security Audit History

Related Attack Classes

The technique used in this hack maps to these vulnerability classes in our security curriculum:

See all Access Control Attacks examples →

Access Control Attacks

Sources & References

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