Anthropic Says New Defenses Cut Claude Reasoning Token Extraction by 90–99%

1 reports 1 reporting sources 4 days agoNew

Understand the event

AI overview

Anthropic says new defenses reduced the volume of internal reasoning tokens extracted from Claude by 90–99% and led to tens of thousands of account bans, with some legitimate users also affected. The protections restrict access to Claude’s internal reasoning, use a classifier to detect extraction attempts and automatically ban flagged accounts. Anthropic describes the extraction as part of large-scale distillation attacks using hundreds of thousands of fake accounts. It alleges that Zhipu extracted cybersecurity capabilities for GLM-5.3 and that Moonshot secretly routed queries through Claude.

Generated by AI from reports · Updated 4 days ago

Latest development10/13 19:06 (UTC+8)

Anthropic says defenses cut Claude reasoning token theft by up to 99%The Decoder

Report timeline

Follow the reports to explore different sides of the event.

10/13

19:06
The Decoder
Anthropic says defenses cut Claude reasoning token theft by up to 99%
Anthropic says new defenses reduced reasoning tokens extracted from Claude by 90 to 99 percent amid large-scale distillation attacks using hundreds of thousands of fake accounts. It alleges that Zhipu extracted cyber capabilities for GLM-5.3 and that Moonshot secretly routed queries through Claude. Its protections restrict access to internal reasoning, detect extraction attempts with a classifier, and automatically ban flagged accounts; tens of thousands have been banned, with some legitimate users also affected.

Event heat trend

可比范围当前: 3
Peak within comparable coverage: 1010/13 20:00 (UTC+8)
近 24 小时变化: -50%

Trends compare the same continuously observed participants, which may cover fewer sources than current heat. Point or click to inspect hourly heat, or use left and right arrow keys.

Keep reading

Latest daily · Issue 24NVIDIA and AI4Bharat Introduce Nemotron-pretraining-Indic-v1 and an Open Data Generation Pipeline