Recently I've been getting a lot of emails sent to my backup email address alerting me that the recovery phone number for my Gmail account has changed, but the account referenced in the email is not mine. I am receiving these emails for multiple different Gmail addresses. As best as I can tell, it's a legitimate email from Google (I've examined the HTML source, the links lead to the same place as legitimate Google emails I generate would lead to).
It appears as though somebody is registering Gmail accounts and using my non-Gmail email address as the backup email, but I cannot figure out what they are attempting to accomplish. It does not appear to be a case of somebody with a similar name mistakenly entering my address because the names on the Gmail accounts are very different both from my name and from each other, and look like the sorts of names that a real person would create (e.g.
firstname.lastname@example.org). Has anyone else seen this happening, or have any idea what the perpetrators are trying to achieve?