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Horizen

Horizen technology offerings and crypto advisory services help organizations leverage the blockchain to solve a broad range of complex use cases. With deep experience in the crypto space, our passionate and committed team of blockchain experts, solution architects, product managers, and developers are accelerating the adoption of blockchain technology by focusing on the critical components of security, confidentiality, speed, and innovation. With unprecedented successes—including the ApeCoin launch—Horizen delivers value at scale.

Blockchain
L2
C/C++
Java
Maximum Bounty
$75,000
Live Since
20 April 2023
Last Updated
14 November 2024
  • PoC required

  • KYC required

Rewards

Horizen provides rewards in ZEN, denominated in USD.

Rewards by Threat Level

Blockchain/DLT
Critical
Flat: $75,000
Primacy of Impact
High
Flat: $25,000
Primacy of Impact
Critical Reward Calculation

Reward amount is 10% of the funds directly affected, capped at the maximum critical reward of:

$75,000
The reward is dependent on the ratio between the funds at risk, which includes all affected projects on top of the respective blockchain/DLT, and the market cap according to the average between CoinMarketCap.com and CoinGecko.com, calculated at the time the bug report is submitted.

Please review how rewards are distributed based on the Immunefi Vulnerability Severity Classification System V2.2. This is a simplified 5-level scale system with separate scales for Smart Contracts and Websites/Apps.

Payouts and Payout Requirements:

Payouts are handled by the Horizen Labs team directly and are denominated in USD. However, payouts can be done in ZEN. Horizen Labs commits to honoring payouts according to the terms set out in this program at the time of report submission, and to treat this program as the agreement and source of truth concerning bug reports and responsible disclosures.

For the purposes of determining report validity, this is a Primacy of Impact program.

Learn more about report validity best practices here: Best Practice - Primacy of Impact vs Primacy of Rules.

Unlike other bug bounty programs on Immunefi, all bug report submissions, including associated vulnerabilities, become the exclusive property of Horizen. By making a submission to this program and in consideration for a bounty, the bug submitter conveys all ownership rights, titles, and interests in the bug report to Horizen. Thus, the final decision on whether a postmortem will be written is at the sole discretion of Horizen

KYC Requirements:

Horizen Labs does have a Know Your Customer (KYC) requirement for bug bounty payouts.

KYC Info Required:

Name, address, ID/passport, and a proof of residency

KYC information is only required on confirmation of the validity of a bug report.

Program Overview

Horizen technology offerings and crypto advisory services help organizations leverage the blockchain to solve a broad range of complex use cases. With deep experience in the crypto space, our passionate and committed team of blockchain experts, solution architects, product managers, and developers are accelerating the adoption of blockchain technology by focusing on the critical components of security, confidentiality, speed, and innovation. With unprecedented successes—including the ApeCoin launch—Horizen delivers value at scale. From crypto-native organizations seeking new monetization paths to companies transitioning to Web3, we deliver overwhelming value for both our partners and the entire crypto industry.

For more information about Horizen, please visit https://horizen.io/

For Whitehats: It is highly recommended that you review the details of this program in full. Although many Bug Bounty programs have standard terms and conditions, each also has their own unique details that are critical to your success.

Prior to submitting a report please review the Immunefi Bug Report Template and Best Practices.

KYC required

The submission of KYC information is a requirement for payout processing.

Proof of Concept

Proof of concept is always required for all severities.

Prohibited Activities

Program's custom prohibited activities
  • The following activities are prohibited by this bug bounty program. Violation of these rules can result in a temporary suspension or permanent ban from the Immunefi platform at the sole discretion of the Immunefi team, which may also result in: 1) the forfeiture and loss of access to all bug submissions, and 2) zero payout.
  • Please note that Immunefi has no tolerance for spam/low-quality/incomplete bug reports, “beg bounty” behavior, and misrepresentation of assets and severity. Immunefi exists to protect the global crypto community, not facilitate grift.
Default prohibited activities
  • Any testing on mainnet or public testnet deployed code; all testing should be done on local-forks of either public testnet or mainnet
  • 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 that are executed against project assets
  • Automated testing of services that generates significant amounts of traffic
  • Public disclosure of an unpatched vulnerability in an embargoed bounty
  • Any other actions prohibited by the Immunefi Rules

Feasibility Limitations

The project may be receiving reports that are valid (the bug and attack vector are real) and cite assets and impacts that are in scope, but there may be obstacles or barriers to executing the attack in the real world. In other words, there is a question about how feasible the attack really is. Conversely, there may also be mitigation measures that projects can take to prevent the impact of the bug, which are not feasible or would require unconventional action and hence, should not be used as reasons for downgrading a bug's severity.

Therefore, Immunefi has developed a set of feasibility limitation standards which by default states what security researchers, as well as projects, can or cannot cite when reviewing a bug report.

Severity
Min. - Max.
Critical
$75k
High
$25k
Total paid

55k

Total Assets in Scope
5