“As the U.S. government presses Moscow to extradite former National Security Agency contractor Edward Snowden, America’s most wanted leaker has a plan B. The former NSA systems administrator has already given encoded files containing an archive of the secrets he lifted from his old employer to several people. If anything happens to Snowden, the files will be unlocked.  The fact that Snowden has made digital copies of the documents he accessed while working at the NSA poses a new challenge to the U.S. intelligence community that has scrambled in recent days to recover them and assess the full damage of the breach.”