CUID file extension - Baidu.cuid file
What is cuid file? How to open cuid files?
File type specification:
The cuid file extension seems to be related to a baidu.cuid file found on certain Android devices in Baidu folder. It appears to be generated by some app related to the Chinese Baidu service, but there also seems to exist a spyware called Baidu.
Can be safely deleted.