olemus
(a) failide viimine sidekanali kaudu ühest arvutisüsteemist teise
= the transmission of files through a communication channel from one computer system to another
https://www.techopedia.com/definition/7192/file-transfer
https://en.wikipedia.org/wiki/File_transfer
protokolle:
- FTP
- HTTP
- SMTP, IMAP
- BitTorrent
- XMPP
- WhatsApp
https://en.wikipedia.org/wiki/Comparison_of_file_transfer_protocols

(b) laiemas tähenduses ka teisaldus irdkandjatega
= any process that utilizes an electronic format and protocol to send or receive files

turvalisus
https://dzone.com/articles/how-to-overcome-file-transfer-security-risks-4

https://www.jscape.com/blog/bid/98893/10-essential-attributes-of-a-secure-file-transfer

https://www.process.com/resources/ssh/comparison_secure_file_xfer.pdf