For the last 12 years or so I've been using unique email addresses. I have a catchall domain and established patterns for giving out email addresses. Over the years I've witnessed many companies either getting hacked or selling out their mailing list. I know this because I start to receive spam to these unique email addresses.

Just this morning I discovered that Sirius XM has been hacked. Shame.

It would make an interesting project to analyze all this history that I've built up.