Let us see some of the scenarios which lead to loss of data from USB drives
1.Unintentional Deletion:Users often delete their files accidently from USB flash drive.Files deleted from USB drive does not get stored in the Recycle Bin.
2.Format:Formatting the USB flash drive containing your important data by mistake.USB drive is also purposefully formatted to make it free from corruption and formatting errors
3.Virus Attack:Deadly virus or malware attack on the USB drive can hide or delete the files on USB drive.
4.Improper Ejection:Removing the USB drive while transferring data between USB device and computer or vice versa can also bring about data loss
5.Other Reasons:Other reasons that causes loss of data from USB drive include power failure,system shut down,electro-static discharge,file system corruption and many more
The important thing to remember when any data loss happens from USB drive is to immediately stop using the affected device,because adding new data to that USB drive results in overwriting of the deleted data making recovery impossible.