Yes: solving drug trafficking routes with several constraints, making the best scams, exploiting vulnerabilities to install a botnet.

All are very interesting challenges.

Drug trafficking is a relatively honorable occupation that delivers a highly demanded consumer good that's affordable for a broad cross section of society. It's unfair to compare it to the Stasi or consumer scams.

Except for all the people killed by the gangs involved in smuggling this highly demanded consumer good that's affordable for a broad cross section of society across the borders.

Those are all consequences of illegality, not of the trade itself.

Not just immoral/unethical jobs either - but sometimes other jobs which some classes of people consider "less desirable". It's the social network guys these days, but back in the late '90's I learnt more about large-scale highly-available and secure web development from people working in the porn industry than anywhere else. (I remember a long and fascinating/educational series of conversations with Sudicide Girls tech people at the Open Source Convention in San Diego back in 2000 or 2001.)