Imagine if you email out a document to your team and ask them to read it. How do you know if they have even looked at the file. One way to get an indication is by embedding a token in the document. When the file is opened, you get a notification. And what happens if someone not in your team opens this file. That could be a problem. Perhaps documents (data) are leaking out of your organization.
This is the idea behind Canary Tokens. Very smart micro level traps. Think of them as granular trip wires. There are so many creative uses for these simple and effective triggers. You tokenize a file and if someone opens it, you receive a notification, with perhaps the source IP address.
Have a look at this old article the brilliant Haroon Meer shared with me. This is an example of a token in the analogue world. Compelling story this … smart stuff.
There’s a brilliant reason why Van Halen asked for a bowl of M&Ms with all the brown candies removed before every show