Last week I got a call from some random recruiter. I was wondering how they'd get my telephone number, because I can't recall putting my phonenumber publicly an

Last week I got a call from some random recruiter. I was wondering how they'd get my telephone number, because I can't recall putting my phonenumber publicly anywhere. Apparently they scrape profiles from linkedin, then put those through some Google Chrome extension (should've asked which one), and it spills out phone numbers! Contemplating if I should switch phone number now.