Strange ".trim" folder in my Storage?

Hi everyone,

I’m just wondering if someone could please tell me what a “.trim” folder is?

It has suddenly appeared in my device storage (not SD Card) and I have never heard of it before. I searched on Google and couldn’t find an answer and I’m worried now it may be some form of malware.

I have done nothing untoward with my phone though to warrant having any malware, and I have scanned my device with Norton’s mobile product and it isn’t turning anything up. It’s got me completely flummoxed.

Any help would be greatly appreciated.

Thanks!