Mastodawn

I just sent a file that no longer exists.

Not deleted after 7 days. Not stored on a server waiting to be breached. Gone — the moment the receiver clicked the link.

Today I'm launching ParaShare by PARAMANT — free for everyone, no account needed to receive.

#postquantum

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Mick Beer 11h ago

How it works:
→ Drop a file at paramant.app homepage
→ Get a one-time link
→ Receiver clicks once — file is permanently destroyed
→ Second request returns 404. No copy exists anywhere.

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Bas Zoetekouw 11h ago

@Mickbeer sounds like a useful sevice, but also like one that has nothing to do with "quantum" (apart from using post-quantum encryption, presumably?).
You still have to take care of the key (well, one time link) distribution yourself, if someone else gets the link they can still retrieve the file, and if your infrastructure is compromised the data can still leak.

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Mick Beer

@baszoetekouw On infrastructure compromise: this is where it actually differs. Files exist only in RAM, never written to disk. No database, no storage layer to breach. An attacker who compromises the server gets process memory — which is gone after delivery. That’s a fundamentally different attack surface than “server stores your file for 7 days.”

It’s not magic. It’s a narrower, harder guarantee — for people who need exactly that.