By Joseph Menn SAN FRANCISCO (Reuters) – The task force appointed by the White House to review controversial surveillance programs and other operations by the National Security Agency has recommended policy shifts that emphasize cybersecurity defense. Among other proposals, the five-member panel’s report issued on Wednesday said the NSA should refrain from inserting deliberate weaknesses in encryption systems that “guard global commerce.” Instead, the government should work to promote strong encryption, and its use “should be greatly expanded” to benefit the cause of Internet freedom and protect American business. For the entire system to work, encryption software itself must be trustworthy,” the panel wrote to the White House.