Onerep is a privacy monitoring service/ privacy provider that Mozilla partnered with for their Mozilla Monitor service.
Yesterday, Brian Krebs (a cybersecurity journalist) dug into Onerep and found that the CEO is a shady Belarussian. Dimitri Shelest, CEO, of Onerep owns multiple "people searching" websites. Shelest has also been linked to aggressive spam and affiliate marketing emails.
Onerep's reputation is shady due to their CEO's multiple conflicts of interest. At worst, Onerep is sucking your personal information. At best, you're paying for a service that doesn't do anything.
Either way, I would not trust Mozilla Monitor service .
EDIT 2: Mozilla’s response to my message: “We did assess OneRep’s data removal service to confirm it acts according to privacy principles that we advocate at Mozilla. We were aware of the past affiliations with the entities named in the article and were assured they had ended prior to our work together. We’re now looking into this further.”
It seems like Mozilla should have had access to more information during their due diligence process than Krebs would have had as a third party. This is very concerning.