RT Book T1 Approaching zero: the extraordinary underworld of hackers, phreakers, virus writers, and keyboard criminals A1 Mungo, Paul A1 Clough, Bryan LA English PP New York PB Random House YR 1992 UL https://krimdok.uni-tuebingen.de/Record/1614573948 NO Includes bibliographical references (p. [245]-247) CN HV6773 SN 0679409386 K1 Computer crimes K1 Computer viruses K1 Hackers