Interesting, first time I ever heard about BGP hijacking, against which there is no protection. Code: https://www.youtube.com/watch?v=9NBv7lKrG1A
BGP Hijacking overview. Routing incidents prevention and defense mechanisms. (Updated) https://www.noction.com/blog/bgp-hijacking
Yes, there are defense mechanisms. But they are not for regular customers of ISP services. Actually these mechanisms are for ISP and their upstream ISPs.