FIELD: semiconductor integrated circuits. SUBSTANCE: proposed semiconductor integrated circuit has circuits implemented in at least one layer of semiconductor substrate and ordered in at least one group, and at least one conductive shielding layer SL disposed above at least one of such groups of circuits and electrically connected to at least one of circuits 1, 2. Substrate of semiconductor integrated circuit has at least one shielding sensor SS made for maintaining a certain nonvolatile state; shielding sensor is coupled through its detection lead with conductive shielding layer SL or at least with one of conductive shielding layers. Output lead of shielding sensor is connected to at least one of circuits 2 so that assigned functioning of this circuit is made impossible in case definite nonvolatile level is applied at shielding sensor output. EFFECT: provision for protection against unauthorized analysis using focused ion stream. 6 cl, 4 dwg
