law: Indian Telegraph Act, 1885
  25. Intentionally damaging or tampering with telegraphs
  If any person, intending-
  (a) to prevent or obstruct the transmission or delivery of any
  
  message, or
  (b) to intercept or to acquaint himself with the contents of any
  
  message, or
  (c) to commit mischief,
  damages, removes, tampers with or touches any battery,
  
  machinery, telegraph lines, post or other thing whatever, being part of or used
  
  in or about any telegraph or in the working thereof,
  he shall be punished with imprisonment for a term which may
  
  extend to three years, or with fine, or with both.