Is WeTransfer secure? What to know before sending sensitive files
WeTransfer is fast, free, and everywhere, so it is the default way a lot of people move a file that is too big to email. The honest answer to 'is it secure' is: secure enough for a photo gallery, not built for a tax return or a signed contract. The difference is worth understanding before you send something you would not want a stranger to read.
What WeTransfer does and does not protect
Transfers are encrypted in transit and the files are encrypted at rest on their servers, which protects the data while it is moving and while it is parked. That part is fine. The weak point is access control: the download is gated by a link, and a link can be forwarded, pasted into a chat, or sit in an inbox that later gets breached. Anyone who ends up holding the link can open the file.
There is also no malware scanning on your behalf and no record of who actually downloaded the file. For a casual transfer none of that matters. For anything with personal or financial information, all of it does.
When a public link is the wrong tool
If the contents are identity documents, banking details, health information, legal paperwork, or anything covered by a privacy obligation, a link-anyone-can-open is the wrong default. The question is not whether the file is encrypted on the server - it is who can reach it, and a forwarded link answers that question for you in the worst way.
A safer way to send the same file
Send to one named recipient through a single-use link rather than a public URL, scan every file for malware on arrival, encrypt it at rest, and keep an audit log of who downloaded what and when. The recipient should still not need to create an account - the no-login convenience is exactly why people reach for WeTransfer in the first place, and you do not have to give it up to get real security.
Ready to try it on your next intake? See how it works.