Crypto’s next billion-dollar hacker may move at superhuman speed

Anthropic’s new Claude Fable 5 puts powerful cyber tools behind safety filters. DeFi, already hit by more than $840 million in hacks this year, is one of the industries with the most to lose if the filters fail.

Melinda 3 hours ago 3 minutes read

Crypto’s next billion-dollar hacker may move at superhuman speed

Anthropic’s new Claude Fable 5 puts powerful cyber tools behind safety filters. DeFi, already hit by more than $840 million in hacks this year, is one of the industries with the most to lose if the filters fail.

By Shaurya Malwa|Edited by Sheldon Reback

Jun 13, 2026, 6:00 p.m.

4 min read

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Montage of a padlock outline superimposed over the face of a dark, hooded figure. — (Gerd Altmann/Pixabay)

Summary

Anthropic’s Claude Fable 5 model offers stronger reasoning and coding abilities while attempting to block dangerous uses. A more powerful Mythos 5 variant is restricted to vetted security users.
Security experts warn that advanced AI will not invent fundamentally new crypto hacks, but will dramatically speed up finding misconfigurations and constructing ways of exploiting weaknesses such as social engineering, exposed keys and flawed signing flows.
This year’s largest DeFi losses, totaling more than $840 million, have mostly stemmed from human error and operational failures rather than smart-contract bugs.