[1920musicman]

Would love to know whether security was a concern at all on those systems (eg industrial espionage, internal program meddling for the purpose of tricking auditors, etc). And if yes, then what are some interesting stories about investigating and resolving security issues.

Thanks for doing this!

[elsherbini]

Hacking was not a problem in the early days of computing as there was no internet and computers talked to each other over dedicated telephone lines. - Grandfather

[norwayjose]

In the late 1970s, we used dial up modems (the kind with the klunky acoustic coupler) to dial into Honeywell's response center to close out repair calls. I also discovered they had games on the response center computer and was able to entertain myself on quiet night shifts by playing Adventure and Star Trek on a TI Silent 700 terminal.

Some of the mainframes we servicced were also connected to ARPANET which provided networked access to university and various government agencies. I know there was an ARPANET worm around 1980. Not sure if there was hacking prior to that.