How CipherSend compares to how people usually share secrets
Most secrets don't get leaked through some exotic attack — they get leaked through the everyday tools used to hand them off. Below is how the common alternatives typically work, and where CipherSend's architecture is built differently.
In short: chat apps keep permanent history, email is effectively a permanent plaintext record, and paste sites hold content indefinitely for bots to scrape. CipherSend instead encrypts in the sender's browser, never stores anything durable, and expires every session on its own after a single use.
Chat & Messaging Apps
How they're typically used: Pasting a password, key, or code directly into a chat thread with a coworker, friend, or support contact.
Common weaknesses:
- Messages usually sit permanently in chat history, searchable by anyone with account access, unless someone remembers to delete them.
- Many platforms aren't end-to-end encrypted by default, and messages "travel unencrypted" in transit on plenty of the platforms people use for quick sharing.
- A password shared once in a group chat can be forwarded, screenshotted, or seen by every current and future member of that thread.
Where CipherSend differs: The secret is encrypted in the sender's browser and decrypted only in the recipient's browser — the relay server in between never gets to read it. The link and session are single-use and disappear on their own; there's no persistent thread for the secret to sit in afterward.
How it's typically used: Sending a password, API key, or credential directly in an email body.
Common weaknesses:
- Most email is not encrypted end-to-end; content can travel and rest in plain text across multiple servers on the way to the recipient.
- Emails are effectively permanent records — they persist in sent folders, backups, and any mail server they pass through, long after the original need has ended.
- A single compromised inbox exposes every credential ever emailed to or from it, since attackers can simply search for words like "password."
- Emails can be forwarded, or sent to the wrong recipient entirely, with no way to recall them.
Where CipherSend differs: Nothing about the secret is ever stored — not in a sent-mail archive, not on a server, not in a backup — because the architecture never writes it anywhere durable in the first place. A short verification phrase lets both sides confirm they're connected to the right person before anything is sent, which a plain email thread has no equivalent of.
Paste / Text-Sharing Tools
How they're typically used: Pasting a config file, key, or credential into a public or "unlisted" text-sharing site to hand it off via a link.
Common weaknesses:
- Content on many paste sites is stored in plain text and retained indefinitely unless manually deleted, and "unlisted" pastes are often just public pastes with a guessable or discoverable URL.
- These sites are actively and continuously scraped by bots looking for patterns like
API_KEY,password, orprivate_key. - Public pastes are frequently indexed by search engines and can remain searchable even after the original paste is deleted.
- Roughly seven in ten leaked secrets found this way were reported to still be active two years later.
Where CipherSend differs: There is no public or persistent storage layer at all — a session exists only for the length of the exchange and closes itself out afterward. A session only ever accepts two participants; there's no shareable public URL space for bots or search engines to crawl.
Password Manager Sharing Features
How they're typically used: Sharing a stored login or note with another person through a password manager's built-in sharing feature.
Common weaknesses:
- This approach generally requires both people to already use the same password manager and have accounts set up, which adds friction for a one-off or one-time exchange with someone outside your existing tooling.
- Security experts generally advise against ad hoc credential sharing outside of a managed tool specifically because informal channels bypass the protections a password manager provides.
Where CipherSend differs: No account or existing tool is required on either side — the Host creates a link, and the Guest only needs a browser to open it. This makes it suited specifically to the one-off case a password manager's sharing feature isn't built for: handing something to someone outside your own ecosystem.
Summary
| Chat apps | Paste tools | Password mgr sharing | CipherSend | ||
|---|---|---|---|---|---|
| Requires an account | Usually | Usually | Sometimes | Yes, on both sides | No |
| Server can read secret | Often | Often | Yes (plain text) | Depends | No — encrypted browser-to-browser |
| Secret persists | Usually | Usually | Often, indefinitely | Depends | No — single-use, self-expiring |
| Verifies right person | No | No | No | Account-based only | Yes — comparison phrase |
| Cross-tool compatible | Yes | Yes | Yes | No | Yes |
A Note on Honesty
CipherSend is not a general file-transfer tool, doesn't keep a message history, and can't protect a secret if either device involved is already compromised or if someone ignores a mismatched verification phrase. It solves a specific problem — handing a short-lived secret to one other person without a durable record of it — rather than replacing every use case listed above.
Common questions
Yes. The secret is encrypted in the sender's browser and only decrypted in the recipient's browser, using industry-standard encryption computed entirely client-side.
No. The server only relays encrypted data between the two browsers — it's built to never interpret or make sense of what's inside.
No. The secret, the encryption keys, and the comparison phrase are never stored on the server, even temporarily.