The cybersecurity giant's pivot to a new growth strategy shows promise.Shares of cybersecurity powerhouse Palo Alto Networks (PANW 3.26%) experienced a resurgence in recent weeks, rising past $300. That is, until May 20, when the company reported earnings for its fiscal third quarter, which ended April 30.Suddenly Palo Alto Networks stock plunged. Does this create a buying opportunity? Perhaps the drop signals a reason to avoid the stock? Answering these questions requires taking a deeper look into Palo Alt ...