Is MetaMask legit or fake?

Could you please clarify for me, is MetaMask considered a legitimate platform in the realm of cryptocurrency? Or is there any evidence to suggest it might be fraudulent? I'm trying to understand the trustworthiness of this wallet service before making any decisions about using it for my crypto transactions. Could you elaborate on its reputation and security measures, if possible? Your insights would be greatly appreciated as I navigate this often-complex space of digital currencies.