12 December 2021
Live since
Yes
KYC required
$650,000
Maximum bounty

Program Overview

ALEX is an open-source DeFi protocol built on Bitcoin via Stacks Blockchain and modelled on the world’s financial markets. At ALEX you can launch and trade your tokens, deposit BTC, stablecoins, and any Stacks native tokens to earn fixed or variable interest, borrow without risk of liquidation and obtain high yield via yield farming. We strive to build a sound financial ‘world’ on Bitcoin, through Stacks’ smart contracts, with the most intuitive and clear user experience.

For more information about ALEX, please visit https://alexgo.io/.

This bug bounty program is focused on their smart contracts and is focused on preventing:

  • Thefts and freezing of principal of any amount
  • Thefts and freezing of unclaimed yield of any amount
  • Theft of governance funds
  • Governance activity disruption

Rewards by Threat Level

Rewards are distributed according to the impact of the vulnerability based on the Immunefi Vulnerability Severity Classification System. This is a simplified 5-level scale, with separate scales for websites/apps and smart contracts/blockchains, encompassing everything from consequence of exploitation to privilege required to likelihood of a successful exploit.

All High and Critical Smart Contract bug reports require a PoC in order to be considered for a reward. Explanations and statements are not accepted as PoC and code is required.

This bug bounty program has fixed rewards in ALEX. The USD amounts reflected are only estimates. For an up-to-date price of the token, please visit https://www.alexgo.io/.

Critical smart contract vulnerabilities are capped at 10% of economic damage, primarily taking into consideration funds at risk, but also PR and branding aspects, at the discretion of the team. However, there is a minimum reward of ALEX 50 000. Additionally, the maximum reward is capped at 500 000 ALEX, even if 10% of the damage in USD equivalent is greater than the USD equivalent of 500 000 ALEX.

The following vulnerabilities are not eligible for a reward:

ALEX requires KYC to be done for all bug bounty hunters submitting a report and wanting a reward. The information needed are Name, Email address, Residential address, Nationality, Stacks wallet address, Identity Proof (Passport, / Driving License / National ID) and Address Proof (Utility Bill / Bank Statement). The collection of this information will be done by the ALEX team.

Payouts are handled by the ALEX team directly and are denominated in ALEX. Payouts are done in ALEX.

Smart Contract

Critical
Level
Up to ALEX 500,000 (~USD $650,000)
Payout
PoC Required
High
Level
ALEX 25,000 (~USD $32,500)
Payout
PoC Required

Assets in scope

Impacts in scope

Only the following impacts are accepted within this bug bounty program. All other impacts are not considered as in-scope, even if they affect something in the assets in scope table.

Smart Contract

  • Loss of user funds staked (principal) by freezing or theft
    Critical
    Impact
  • Vote manipulation
    Critical
    Impact
  • Miner-extractable value (MEV)
    Critical
    Impact
  • Protocol Insolvency
    Critical
    Impact
  • Permanent freezing of funds
    Critical
    Impact
  • Theft of unclaimed yield
    High
    Impact
  • Freezing of unclaimed yield
    High
    Impact
  • Temporary freezing of funds for a minimum period of 1 day
    High
    Impact

Out of Scope & Rules

The following vulnerabilities are excluded from the rewards for this bug bounty program:

  • Attacks that the reporter has already exploited themselves, leading to damage
  • Attacks requiring access to leaked keys/credentials
  • Attacks requiring access to privileged addresses (governance, strategist)

Smart Contracts and Blockchain

  • Incorrect data supplied by third party oracles
    • Not to exclude oracle manipulation/flash loan attacks
  • Basic economic governance attacks (e.g. 51% attack)
  • Lack of liquidity
  • Best practice critiques
  • Sybil attacks
  • Centralization risks

The following activities are prohibited by this bug bounty program:

  • Any testing with mainnet or public testnet contracts; all testing should be done on private testnets
  • Any testing with pricing oracles or third party smart contracts
  • Attempting phishing or other social engineering attacks against our employees and/or customers
  • Any testing with third party systems and applications (e.g. browser extensions) as well as websites (e.g. SSO providers, advertising networks)
  • Any denial of service attacks
  • Automated testing of services that generates significant amounts of traffic
  • Public disclosure of an unpatched vulnerability in an embargoed bounty