Two Mac sites accused of publishing Apple trade secrets filed an appeal Tuesday in their case with the company. “The California courts have a long history of supporting and protecting the freedom of the press,” said attorney Kurt Opsahl of the Electronic Frontier Foundation, which represents the journalists. “The Court of Appeal will now get the opportunity to correct a ruling that endangers all journalists.” A California judge ruled March 11 that the owners of the sites may have to provide the identities of their confidential sources.