Synthetix

Rewards are distributed according to the impact the vulnerability could otherwise cause based on the Impacts in Scope table further below.

Reward Calculation for Critical Level Reports

For critical Smart Contract bugs, the reward amount is 10% of the funds directly affected up to a maximum of USD $100,000. The calculation of the amount of funds at risk is based on the time and date the bug report is submitted. However, a minimum reward of USD $10,000 is to be rewarded in order to incentivize security researchers against withholding a bug report.
For critical web/app bugs, the reward amount is 10% of the funds directly affected up to a maximum of USD $30,000. The calculation of the amount of funds at risk is based on the time and date the bug report is submitted. However, a minimum reward of USD $1,000 is to be rewarded in order to incentivize security researchers against withholding a bug report.

Repeatable Attack Limitations

In cases of smart contract vulnerabilities whereby the attacks can be repeated at certain time intervals, if the attack can be stopped by a configuration change, the total value-at-risk from the consecutive attacks is computed by adding up the losses incurred and applying the below discount factors:

If the attack cannot be stopped by configuration changes, the discount factors are adjusted by 50% (i.e. 0% / 12.5% / 25% … ), with the terminal discount factor being 100% at 4 hours (from the initial attack).

Previous Audits

Synthetix has provided these completed audit review reports for reference. Any unfixed vulnerability mentioned in these reports are not eligible for a reward.

• https://github.com/Synthetixio/synthetix-docs/blob/master/content/releases.md - https://docs.synthetix.io/v/v3/for-developers/smart-contract-audits

Feasibility Limitations

Bug reports that involve one or more other protocols (e.g. utilising flash loans from a margin protocol or manipulating the spot prices on a DEX), either to make an attack more severe than it would be in isolation, or to achieve an attack that would otherwise be impossible or infeasible, would be out-of-scope. However, they will be considered within scope and categorised according to the program rules as long as all of the following are true:

• Losses or other negative effects of the attack are inflicted on users who provide liquidity (whether for staking or trading) directly on contracts managed by Synthetix (i.e. vulnerabilities on the greater Synthetix Ecosystem partners and integrators are out of scope).
• The losses or other negative effects could be prevented via changes to contracts that can be updated or modified.

In case an attack requires use of attackers’ own funds (in order to perform/execute a trade), and requires the attacker taking on economic or financial risk, then a discount is applied on the value-at risk based on the likelihood of an attack succeeding. The likelihood should be estimated by reference to reasonable assessment of the environment at the time of the bug bounty submission or by reference to the PoC. Synthetix has ultimate discretion in providing their opinion on the discount used and the eligibility of such disclosures to be considered within scope of the bounty program.

Proof of Concept (PoC) Requirements

A PoC is required for the following severity levels:

• Critical
• High

All PoCs submitted must comply with the Immunefi-wide PoC Guidelines and Rules. Bug report submissions without a PoC when a PoC is required will not be provided with a reward.

Reward Payment Terms

As part of the bug bounty matching program, Optimism will contribute 52,500 OP tokens to match the rewards offered by Synthetix. This means that for every reward paid out by Synthetix to a security researcher, Optimism will provide an additional, matching reward, in OP tokens. The total reward pool for this program is 52,500 OP tokens. The other 50% of the reward (if applicable for matching) will be paid by Synthetix in USDC.

Rewards are distributed according to the impact of the vulnerability based on the Immunefi Vulnerability Severity Classification System v. 2.3. This is a simplified 4-level scale. The development of this scale took into consideration multiple factors that may affect a vulnerability and its likelihood of exploitation, but finalizes them largely by the impact that they cause.

The table below is mostly concerned with the consequence of a successful exploit. Keep in mind that if the exploit requires elevated privileges or uncommon user interaction, the level of the bug may be downgraded to reflect that or rejected.

Goodwill Payments

This applies to the following severity and asset levels:

• Smart Contract - Low
• Web/App - Medium
• Web/App - Low

Synthetix is willing to offer discretionary “Goodwill Payments” for any bugs that fall under these categories and affect TVL <$1,000,

Furthermore, if the value of the assets at risk cannot be estimated, then the bounty payment would be discretionary based on goodwill terms.