The document discusses sources of trust in the context of declining trust in institutions in France. It finds that micro-influencers with authentic engagements are highly trusted sources. It recommends that brands develop relationships with influencers who demonstrate expertise in their field or who are activists for causes related to the brand's values. The best influencers may already be a brand's employees or customers, who have first-hand experience and knowledge to act as ambassadors. Building trust requires giving influencers experiences, developing long-term relationships through exclusive access and input, and including them in the creative process.