FORESHOCK

Every protocol here carries a dated score and the share of it backed by independently verified evidence. Where that share is still thin the assessment says so, is marked Low-signal rather than given a risk band, and holds every unevidenced category at the neutral midpoint instead of assuming it safe. Every score and its reasoning are free to read; the underlying dependency, incident and audit records are part of a plan. How a score is built, how to read one, and how the rubric was tested against real exploits are all in the methodology.

Coverage grows three ways: protocols Foreshock selects at its own discretion, protocols requested through the Request coverage button, and sponsored assessments delivered on an agreed timeline. No path has a guaranteed date except sponsorship.

Scores run from 0, the safest reading, to 100, the riskiest, where 50 is the neutral midpoint every unverified category is held at. Red marks a protocol scoring 50 or above, the band called Elevated: worse than neutral on the evidence gathered. Amber marks one below it, called Moderate. The boundary is fixed. It does not move as coverage grows, and it is not fitted to any backtest result.

Arbitrum Bridge

Arbitrum Bridge official site →
Ethereum

:

  • Evidence: this reading is based on 100% of the scored weight, verified against named sources. Categories without verified data are excluded from the reading, never counted as safe.
  • Validation: the rubric is backtested against past exploits of protocols in the same TVL, age and category bucket. Protocols of this scale and kind have no such history - a limit of the record itself, not unfinished work.
Score by categories
Code characteristics11.3

Admin key: an unidentified controlling contract (no single key can act alone; its signers and any delay are unverified), upgradeable without a meaningful timelock, open source.

Audit profile10.0

9 audits/contests on record, most recent (Trail of Bits, 2026-08-07) has unread findings, scored as unknown, not assumed clean.

Dependency risk6.0

Uses 1 oracle (The Arbitrum bridge is the chain's own canonical bridge: Ethereum only learns the Arbitrum state from assertions that proposers post and that anyone can dispute, which is why a withdrawal takes about a week to clear.).

Governance attack surface5.0

Top 10 holders control 48.29%, adjusted figure may still include pooled custody (untagged exchanges, infrastructure contracts) due to tagging coverage limits; exclusions require positive identification.

TVL profile3.5

TVL change (21%) is within a stable range.

Historical incidents2.3

No known own or inherited incidents.

Team factors1.7

Doxxed team, track record: unknown.

Protocol age1.5

1830 days live, past the ~1yr floor; treated the same as any older protocol, not scored progressively safer with more age.

Bug bounty0.7

Has a bug bounty program, up to $2 000 000, hosted on Immunefi.

Assets held (6)

Available with a plan. See pricing.

Dependencies (1)

Available with a plan. See pricing.

Incident history (0)

Available with a plan. See pricing.

Audit history (9)

Available with a plan. See pricing.

This assessment follows Foreshock's published methodology. Exact category weights, scoring rules, thresholds, and aggregation logic are proprietary and not shown here. How to interpret this assessment