Palo Alto Networks is trading at BRL 33.40, down 7.71%, after Fortinet’s lower service-revenue forecast triggered a cybersecurity selloff. - Palo Alto fell in sympathy with peers; no new company announcement was reported. - Disappointing ServiceNow results and guidance, alongside Alphabet’s results, added software-sector pressure and raised concerns about expectations and AI investment returns. - The supplied price context is the source for the live price and percentage move; external reporting supports the sector explanation, not a separate Palo Alto-specific catalyst.