Palo Alto Networks is trading at BRL 28.31, down 4.03%, with no confirmed catalyst for the October 21 decline.

  • The company disclosed active exploitation of a PAN-OS authentication-bypass flaw affecting GlobalProtect. Independent reporting confirmed ransomware groups were exploiting it, but reporting does not establish a link to the share move.
  • Major U.S. indices were positive in the supplied market context, so broad-market weakness does not explain the drop.