I wrote a trojan (for educational purposes) in Delphi by studying another one for which I had the source code. The original was called Donald Duck. Then I wrot

I wrote a trojan (for educational purposes) in Delphi by studying another one for which I had the source code. The original was called Donald Duck. Then I wrote back-office software in Delphi that ran for 15+ years without any maintenance or support. Those were simpler times.