Onetime highflying tech executive Ray Lane testified on Monday during a sex discrimination trial involving his former employer, Kleiner Perkins Caufield & Byers, that he made a mistake in judgment involving the harassment of a female venture capitalist at the firm, and that he feared for the woman’s safety. Lane, who previously served as executive chairman of Hewlett-Packard Co (HPQ.N) and president of Oracle Corp (ORCL.N), told the court he erred in not immediately informing others that Trae Vassallo told him about unwanted advances by her colleague, Ajit Nazre, during a 2011 business trip.