Related Clues:

• Unauthorised disclosure of classified information
• That which seeps out
• Amount seeping away
• (Politically motivated) seepage?
• Disclose unauthorised information
• Something picked up by a mole
• Amount getting out
• Cause of deflation
• Julian Assange posting
• The French go to Alaska for escape
• Wind up online prematurely, as a song
• Discharge of fluid through a small gap
• It slips out slowly - arable land to kick-start generation
• Hole in 12 Across
• Premature release