Top three-source views and TSO verification result:
TechCrunch: Confirms that Anthropic is expanding Project Glasswing, opening Claude Mythos Preview access to about 150 new organizations across more than 15 countries; it also says the expanded group includes entities related to critical infrastructure, and notes that some of the information came from a person familiar with the matter cited by the Financial Times.
Infosecurity Magazine: Confirms that Anthropic announced the expansion on June 2, saying it builds on an initial cohort of about 50 partners that received Claude Mythos Preview access in April; it also adds that this initial cohort is said to have found more than 10,000 high-severity or critical vulnerabilities.
SecurityWeek: Confirms that Anthropic announced the expansion of Project Glasswing on Tuesday, adding about 150 organizations; it also notes that these organizations must meet Anthropic’s standards before gaining access.
TSO verification result: The three sources cross-confirm three points — Anthropic is expanding Project Glasswing, about 150 new organizations are gaining access to Claude Mythos Preview, and the project initially had about 50 partners — so these may be treated as confirmed facts. Details on the specific industries covered, the number of countries involved, and the number of vulnerabilities discovered are mentioned only by some sources, and in some cases come from secondary references or supplemental reporting, so they should be treated as differing information.
Confirmed facts:
Anthropic has expanded Project Glasswing.
The expansion covers about 150 new organizations.
These organizations will receive access to Claude Mythos Preview.
The project initially had about 50 partners, who gained access in April 2026.
New participants must meet Anthropic’s requirements before receiving access.
Main differences or discrepancies:
Geographic scope: TechCrunch says the new organizations are spread across more than 15 countries; SecurityWeek and Infosecurity Magazine do not mention country distribution.
Industry coverage: TechCrunch’s summary mentions critical-infrastructure-related fields; the user-provided event summary also mentions power, water, healthcare, communications, and hardware, but those specifics do not all appear in the three provided source texts, so they cannot be fully confirmed from the given sources.
Security-testing results: Infosecurity Magazine says the initial partners reportedly found more than 10,000 high-severity or critical vulnerabilities; the other two sources do not mention that figure, so it cannot be cross-confirmed.
Source framing: TechCrunch notes that some of the expansion details came “according to The Financial Times, citing a person familiar with the matter,” meaning some supporting information is secondhand; the other two sources focus more directly on the expansion itself.
Background and analysis:
Project Glasswing is described across all three sources as an Anthropic initiative for security testing and vulnerability scanning, with the main action being broader access to Claude Mythos Preview. Based on the confirmed information, this round of expansion significantly increases participation, growing from about 50 initial partners to about 150 new organizations, indicating a move from an early pilot toward broader-scale security validation.
However, the sources leave boundaries around several details: which countries and industries are specifically included, whether and how critical infrastructure is subdivided, and what methodology underlies the claim of 10,000+ vulnerabilities found by the initial cohort. Some sources provide numbers, others give only general descriptions, and some omit the details entirely. As a result, coverage should clearly separate the confirmed expansion scale and access rights from the unconfirmed industry, regional, and outcome data.
Three-source summary:
TechCrunch: Emphasizes the scale of the expansion, more than 15 countries, and critical-infrastructure relevance, and cites FT-sourced supplementary information.
Infosecurity Magazine: Emphasizes the timing, the progression from 50 initial partners to 150 new organizations, and the claim of 10,000+ vulnerabilities found.
SecurityWeek: Emphasizes the expansion announcement itself and the requirement that new organizations meet Anthropic’s standards for access.
Conclusion:
Taken together, the three sources confirm that Anthropic has expanded Project Glasswing and opened Claude Mythos Preview to about 150 new organizations for security testing and vulnerability scanning. However, the exact industry mix, country distribution, and number of vulnerabilities discovered contain gaps or differences across the sources and cannot be fully confirmed from the provided material.