I ran a program called Go64 that checks your Mac for incompatible apps and it didn't flag SS
I haven't, however, installed Catalina yet, so probably best to wait and hear directly from Ben or someone who is running SS successfully on the release version of Catalina
Both SecuritySpy v4 and v5 are fully 64-bit. SecuritySpy v5 has been tested with Catalina and no problems have been found. SecuritySpy v4 will need to be updated before it will run without a warning on Catalina (for now you can right-click and select Open to get round the warning, and it will run just fine using this method).
Comments
I haven't, however, installed Catalina yet, so probably best to wait and hear directly from Ben or someone who is running SS successfully on the release version of Catalina
https://www.stclairsoft.com/Go64/