Shares crashed as investors worry about future growth.Okta (OKTA -3.42%) shares spiraled lower after the cybersecurity company reported solid second-quarter results but offered a disappointing outlook.On the face of it, the latest numbers looked good. Okta's Q2 revenue jumped 16% year over year to $646 million, while subscription revenue climbed 17$632 million. Adjusted earnings per share (EPS) surged from $0.31 a year ago to$0.72. The company had guided for 13% to 14% revenue growth and adjusted EPS ...