Some form of AV checking for uploaded files before its available for everyone on the channel to open, if its flagged reject the upload. ## <bountysource-plugin> Want to back this issue? **[Post a bounty on it!](https://www.bountysource.com/issues/26613379-anti-virus-checking-on-file-uploads?utm_campaign=plugin&utm_content=tracker%2F16890630&utm_medium=issues&utm_source=github)** We accept bounties via [Bountysource](https://www.bountysource.com/?utm_campaign=plugin&utm_content=tracker%2F16890630&utm_medium=issues&utm_source=github). </bountysource-plugin>