000			00288nam a2200097Ia 4500
005			20250424112920.0
008			250424s9999 xx 000 0 und d
300			_aviii, 473n p. :ill. ; 30 cm.
650			_aComputer networks--Security measures. Cyberspace--Security measures.
942			_cSR
999			_c37856 _d37856