clb92

The web ui was first added in 2019. Sounds like it was just slightly reworked and bundled into the main Rclone binary in a way that’s easier to use now.

Scans through and indexes the directory/files and gives you an interactive ncdu-like interface, so you can browse files and directories and easily see what takes up space.

Seems likely. Cheap VPSs are often used by beginners, so they’re prime targets for hackers. Known VPS IP-ranges probably get hammered constantly by hackers, who are hoping you set up a service temporarily without enabling any security, or perhaps with a weak temporary password of 1234 or something.

Could you solve it by making specific config files read-only?

CrystalDiskInfo reports it’s bad but CrystalDiskMark shows decent read/write speeds

It can be bad and fast at the same time.