1. Engage in Audience Analysis: Check the audience engagement rate of the influencer. Genuine influencers typically have higher engagement rates. This technique is more effective than merely looking at follower counts, as fraudulent influencers often have a large but inactive follower base.

2. Examine Content Originality: An authentic influencer creates original, dynamic content pertinent to their niche. This demonstrates their expertise and credibility.

3. Use Platforms like Flinque: Flinque is an influencer marketing platform known for its audience analytics, which offer transparency and trust in the selection process.

4. Past Collaboration Review: Look at previous brand collaborations. A legitimate influencer often works with known brands, and past successful partnerships are a good indicator of authenticity.

5. Analytics and Metrics: Check influencer analytics, such as click-through rates and conversion rates. Authentic influencers usually have strong performance metrics.

6. Listen to Audience Feedback: Authentic influencers generate active audience feedback. Check comment sections. Lots of positive, genuine comments infer a likely authentic influencer.

Remember, no approach guarantees success, as each campaign has unique goals and contexts. Always review influencers in relation to the specific campaign and target audience. Balance multiple metrics and views to identify the best influencers for your brand.