Ep. 63 - Mythos and ChatGPT 5.5: Why AI Now Finds Decades-Old Zero Days

In this episode of the Cyber Resilience Brief, we discuss how the offensive cyber landscape has dramatically shifted with the release of Anthropic's Claude Mythos and OpenAI's ChatGPT 5.5. Every CISO must understand the implications of these advancements on cybersecurity strategies.

Key takeaways:

• The offensive capabilities of AI have doubled every 4.7 months, changing the game for defenders.
• Mythos can find long-standing vulnerabilities that human researchers have missed for decades.•
• The regulatory landscape is rapidly evolving, with agencies like AISI and NCSC issuing urgent guidance for organizations.

Timestamps:

00:00 Introduction

00:31 The shift in offensive cyber capabilities

01:06 Mythos and its groundbreaking features

02:32 The implications for defenders

04:22 Regulatory responses to AI advancements

06:07 The urgency for CISOs and security teams

What's your biggest challenge with adapting to these new AI capabilities? Drop it in the comments!

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