WIndows considers the publsher to be unknown because all the executables are unsigned, including the installer meanng there is no way for a customer to be assured the program has not been tampered with by any malicious hacker and prevents windows from detecting later executable tampering by a local malware infection after installing. JB, the executable main.exe has a build language of "Chinese (Simplified, PRC)" so the developers system is configured towards the Chinese language. and final proof of that is I just plugged in a USB caddy for 2.5" PATA hard drives and it sees that too and is now scanning that as well. So this is using the same core algorithims as any normal data recovery program just limits are placed upon what devices it will display and search.
In this case the USB flash drive software has the enumeration of fixed mass storage devices disabled so it will only see devices classed as removable media, incuding USB hard drives! It is currently scanning a 2.5" SATA SSD drive inside a USB caddy. all may be made by the same company in the same factory from the same raw materials and are functionally the same just dressed up differently!
It is similar to how a medicines counter will have Ibuprofine in several different targeted products all containing the same drug and fillers and licensed under the same research one claiming to target menstral cramps another to target joint pain and another to target headaches another to target flu symptoms. IF your general purpose data recovery program enumerates removable media devices like USB flash drives and memory cards then there is absolutly no reason to add such a apparently specialised branded product like this. Terry E., generally speaking the operation of either type of recovery program relies on the same family of algorithims to recover deleted or lost data files. There is only very few of those, CnW recovery and JPEG Recovery LAB are the ones I know of. Those use a combination of techniques: signature based scanning combined with file validation, entropy scanning and whatnot. And this brings us to a 3rd group of tools which do advanced carving. Major drawback of both methods, in relation to FAT is that fragmented files are very hard to recover in one piece. However they can only recover files they have a signature for. They potentially recover more files as they can even recover for example referenced in the file system (even as deleted). The well know PhotoRec is an example, but there are also many commercial tools using this technique. Rather than relying on file system structures (mostly FAT based on flash / memory cards) they scan for so called magic bytes or signatures to locate files. They simply ignore or filter out any non media (photo, video, audio etc.) type files.Ī second category is the so called 'carvers'. Many memory card, flash drive, photo recovery programs are trimmed down versions of 'full' featured file recovery and undelete.