Exploiting Slack's video embeds to achieve E2EE communication
Using Slack video blocks to share PGP encrypted messages inside the Slack client
Exploiting Slack's video embeds to achieve E2EE communication launched on June 15, 2026 with 31 votes, #734 of 22,647 launches that month and more than 95% of that year's launches.
In plain words
This tool leverages Slack's video embed functionality to enable end-to-end encrypted communication within the platform. It's designed for Slack users who need private messaging without relying on Slack's standard encryption. The approach uses video embeds as a workaround to establish encrypted conversations, making it useful for users seeking additional privacy layers within their workspace communications.
written from the facts on this page · September 2026
From the sources
Some time ago, while exploring Slack’s Block Kit reference, I noticed something peculiar: the video block . When I saw that it accepted a video_url , the first thing I thought was: how does it distinguish between any content and an actual video? Would there be any particular requirement or limitation in the embed? Foreign sources? Yeah, no. There is no runtime check, other than checking the provided video_url is accessible and responds with a 2xx or 3xx code. After those checks, it’s nothing more than a simple iframe. So, a few days ago I got an idea. What if there was an app that allowed you to encrypt messages with a key pair and send them through Slack? The idea is simple. Inside your…from v1c.rocks
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