He found it on a forum that looked like it hadn't been updated since 2004. The thread was titled:
The most critical aspect of this phenomenon is the irony of security. Users seeking Cisdem Duplicate Finder are, by definition, trying to clean and optimize their computers. They are likely concerned with performance, speed, and file organization. Yet, in pursuing a cracked key, they invite the very chaos they seek to eliminate.
: Cracked versions are often modified versions of older builds and cannot receive official updates. This makes them prone to frequent crashes, which can lead to permanent data loss if the app fails while moving or deleting files. 2. Cisdem Duplicate Finder: Legitimate Features