[the_wolf]

Simple how-to instructions:

  1. log into slack

  2. share a private file

  3. go to: 

> https://api.slack.com/web

  4. generate API token

  5. copy the link to your private file, and paste as plain text.

  6. a file id is in the link, somewhere

  7. try out the file id by visiting links like:

> https://slack.com/api/files.info?token=#secret!&file=???????...?

  8. see also:

> https://api.slack.com/methods/files.info

  9. in the JSON output you will CTRL+F to see an address like:

> https://slack-files.com/#########-?????????-!!!!!!!!!

  10. slackbot warns you, and only you, once and only once 
      that someone found that link. this notification may
      get buried, or forgotten about. it is your only chance
      to revoke the public link.

  11. if you forget about that link, and it goes viral with 
      millions of visits, lots of luck gentlemen!