BT bets on Anthropic Glasswing to harden UK defenses
AI
Anthropic
TLDR: LONDONâBT becomes the first UK firm in Anthropic Project Glasswing, gaining access to Claude Mythos Preview at the AI Adoption Summit.
Key Takeaways:
- Anthropic launched Project Glasswing in April 2026 with select partners to counter AI fueled attacks.
- BT CEO Allison Kirkby said the Claude Mythos Preview access will help defend BT networks and customer systems.
- BT already blocks 4 million attacks daily, and the partnership could accelerate AI driven vulnerability discovery at scale.
This is less sci fi and more supply chain realism: if attackers are using AI at speed, defenders need equally advanced tools. BT signing on signals UK infrastructure wants to keep pace.
This is less sci fi and more supply chain realism: if attackers are using AI at speed, defenders need equally advanced tools. BT signing on signals UK infrastructure wants to keep pace.
Q&A
What changes for BT once Claude Mythos Preview access moves from concept to daily security work?
BT can more quickly translate model outputs into internal testing, patch recommendations, and prioritized triage, reducing time from signal to mitigation across its network.
Why does limiting public release of Claude Mythos Preview matter for the security benefits BT expects?
Restricting access lowers the odds that attackers can directly reuse the same capability, shifting the advantage toward vetted defenders within controlled environments.
How could BTâs 4 million blocked attacks daily influence what Anthropic expands next in Project Glasswing?
High volume filtering creates rich telemetry, which can help Anthropic and partners refine threat models, scoring, and guardrails for future model access decisions.
If developers gain access to similar models in 6 to 12 months, what happens to vulnerability remediation timelines?
Patch workflows may speed up, but prioritization could get harder as more candidate exploit paths appear, pushing teams toward tighter risk scoring and verification.
What does BTâs sovereign AI push imply about the UKâs long term approach to security and procurement?
It suggests the UK wants buying power and policy leverage that keep critical defenses close to national interests, not solely reliant on foreign model access.
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