Is Handshake legitimate?

Could you please elaborate on your concerns regarding the legitimacy of Handshake? As a cryptocurrency enthusiast and professional in the field, I understand the importance of ensuring the validity and credibility of any investment or project. What specific factors are causing you to question Handshake's legitimacy? Are there any rumors or doubts that have been circulating in the community? It would be helpful if you could provide some context or examples so that I can offer a more informed and accurate response.