Palo Alto Networks introduced Unit 42 Continuous Frontier AI Defense on September 22, sending its shares approximately 2.4% higher to $397.74 at around 10:29 a.m. ET Wednesday. The annual-subscription service combines Anthropic's Claude Mythos 5, OpenAI's GPT-5.6-Cyber and open-weight models to identify vulnerabilities and assess whether attackers could exploit them. Palo Alto Networks says the platform recommends prioritized fixes, code changes and virtual patches, with security specialists verifying findings and attack paths. Recurring subscriptions could make consulting revenue more predictable, but AI usage and specialist reviews may weigh on margins. Renewals, service profitability and the extent to which remediation can be automated will be important to the service's scalability. Shares were trading 70.08% above GuruFocus' $233.85 GF Value estimate, while GuruFocus flagged six warning signs for PANW.