Ask HN: Website with My Email and Phone Was Hacked. Any Way to Find Out Which?

For about the last week I suddenly started getting bombarded with scam calls and emails. Pretty good sign that my info was recently leaked/ stolen from some website that has not yet disclosed.

I checked https://haveibeenpwned.com but nothing new shows up. My phone number is only 2 years old so I know it isn’t from the previous incidents (looking at you hardware wallet Ledger!).

Today I got another scam email but this time they were so sloppy they sent the email with everyone listed. So I browsed through the emails and a lot of them are tech related and some of the people I looked up work in tech.

I typically put in a fake phone number into websites for online orders for this purpose and only give out my phone to websites that actually need it which makes this more worrying to me.

Any way of tracking this down, or should I not bother and just bite the bullet and do another phone number change?