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Invest2 publishersIndependently confirmed2 min readPublished

Nethermind and ZEUS seek Anthropic AI bug reports that skip human review

Nethermind and ZEUS applied for Anthropic's OSS Scanner a day after it launched, asking for AI scans of Ethereum client and Bitcoin wallet code. Anthropic had manually checked about 6,000 of the 29,000-plus flaws its models flagged, crypto.news reported, so the teams that get the reports have to judge them.

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What happened

  • OSS Scanner sends reports to participating maintainers without the human verification step Anthropic uses in its existing disclosure process.
  • In early testing, outside penetration testers checked 97 high-severity and critical findings across 48 projects, and 85 of them, about 88%, met Anthropic's disclosure standard.
  • Nethermind asked for scans of its entire repository, while ZEUS wanted its app checked for weaknesses in payments, private keys and Lightning connections.
  • None of the applicants' pull requests to the OSS Scanner repository had been merged when Cointelegraph published.

Compiled by The InvestorSomething wrong?How this is made

Why it matters

  • cost Anthropic says reports can carry wrong severity ratings or flaws that do not fit a project's design, and small teams like ZEUS pay for each one in maintainer hours.
  • constraint No test yet measures how the scanner does on lower-severity findings, so a project cannot know in advance how much of a report will hold up.
  • decision Anyone weighing a protocol's security now has a specific question for its team: how many scanner findings were confirmed and patched.

Anthropic says it dropped the reviewer for speed. The company said manual review is slow, "so we're not always able to share vulnerabilities as quickly as we would like" [5]. About 23,000 candidate flaws are still waiting for review, roughly 79% of everything its models flagged [19][20]. OSS Scanner is the company's answer: reports go out as soon as a project's code is scanned [12].

Anthropic said the reports "will be generated by our strongest models (including Claude Mythos) to give open-source projects the largest defensive advantage" [3]. In early testing, 12 serious findings failed the penetration testers' check, a miss rate of about 12% [18]. If that rate held across the 23,000 unreviewed findings, roughly 2,800 reports would fail Anthropic's own bar [21].

If approved, the crypto teams could get real bugs plus suggested fixes [13], for free [2]. They could instead get a stack of findings that fall apart once someone checks them. Or the requests could sit. Anthropic decides case by case, weighing a project's importance to infrastructure and user security, its exposure to remote attacks and how many users or projects depend on it [8]. It has not set a timetable for approving the crypto applicants or delivering their first reports [9].

I think an OSS Scanner application tells an investor what a team wants and little about how safe its code is. The crypto.news report described the filings as requests for participation, not confirmation that the projects have completed security audits [11]. The counter-case is reasonable. An 88% pass rate on serious findings [15] is high for machine output that no person has checked. A report that arrives with a proposed patch should also cost a maintainer less to verify than the bug would cost to find. I am wrong if the first crypto reports hold up at close to that rate, because then enrollment alone would predict real fixes.

Anthropic itself named speed as the risk. It warned that AI may favor attackers in the near term, because exploitation is getting cheaper while verifying and fixing flaws stays slow and dependent on people [17]. Boltz, a Bitcoin swap provider, suspended operations in August, saying attackers were developing exploits faster than its team could patch them [10].

What to watch

  • Whether Anthropic merges the Nethermind and ZEUS pull requests, and how long first reports take to arrive after approval.
  • The first published scanner report on Ethereum client or wallet code, and whether its findings survive the team's own review.

Clarity's read

What the record supports and how the coverage leans. The claims behind it follow.

Reality

Evidence55
Adoption12
Hype gap+20
Incentives50
Confidence60
Why these scores

Claim ledger

Ranked by verification strength, evidence, and original report placement.

  1. [1]

    Ethereum developer Nethermind and Bitcoin wallet ZEUS applied for access to Anthropic's new AI security scanner, which uses Claude Mythos to identify software vulnerabilities.

  2. [2]

    Anthropic launched the free OSS Scanner on October 8; the crypto applications were submitted on October 9.

  3. [3]

    "These reports will be generated by our strongest models (including Claude Mythos) to give open-source projects the largest defensive advantage," Anthropic said in its announcement.

    ReportedSupportedSource: Anthropic announcement, via Cointelegraph2 sources— create a free account to open themView cited source

Sources

2 independent publishers whose own reporting we read for this story.

  1. cointelegraph.com

    1 article · October 8, 2026

    Crypto projects apply for Anthropic’s new frontier AI security scanner
  2. crypto.news

    1 article · October 9, 2026

    Crypto firms turn to Anthropic AI to find security flaws

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