Recently, a few posts circulated claiming that files from efchat.net were “malware.”
Those claims are incorrect and stem from a misunderstanding of how modern web apps work.
What actually happened
A user downloaded a file named effie.png from https://efchat.net/src/assets/effie.png. That path, which looked like an image URL, returned HTML (our main site page) because efchat uses a single-page application (SPA) framework. SPAs often return index.html for any unrecognized route so the client router can handle navigation.
Saving that response as effie.png simply produced an HTML file with a .png name. It wasn’t a binary payload, just markup.
Why this isn’t malware
Disassembling HTML as if it were x86 machine code or “reverse-engineering” it doesn’t make sense; browsers never execute HTML as native code. The content was standard page markup containing:
- meta tags for viewport and theming
- public scripts for Cloudflare Turnstile and Twitter embeds
- hashed asset references generated by our build system
No obfuscation, no payloads, no network beacons.
The writeups even admit: “no explicit malicious payloads were found.”
That alone should have ended the rumor.
About the real effie.png
The actual image referenced in our metadata (/assets/effie-BwTD_-jP.png) is a valid PNG. Repeating byte sequences visible inside the compressed data are normal zlib compression artifacts caused by flat-colored regions. When decompressed, they produce a tiny ghost icon of Effie, efchat’s mascot, not hidden code!
Security posture
efchat’s current app stack doesn’t yet handle cryptographic key material. End-to-end encryption will arrive through efsec – our in-progress, open-source implementation of the Matrix protocol’s encryption layer.
In the meantime:
- No user private keys exist or are stored by efchat.
- All communication is encrypted in transit using HTTPS/TLS.
- efsec’s cryptographic code is public, in development, and will undergo formal audit before release.
- Security questions or findings can be sent to [email protected].
We’re committed to doing this right and transparently, not rushing “encryption” headlines before the implementation is ready.
❤️ A note to the community
Misinformation spreads fast, especially when technical jargon is involved.
We’re builders, not a faceless company; when you see efchat discussed, know that real people are here writing code, fixing issues, and keeping things transparent.
If you ever have a concern or curiosity about efchat’s behavior, reach out, we’ll explain it openly.
engineering at efchat – notes on security, privacy, and new features