A small Brazilian network yesterday hijacked half the internet too, including several of my own prefixes, all of whom have IRR and RPKI set up.

https://bgp.tools/as/266970?show-low-vis#prefixes

[bgp.tools Alert] for AS200676 A hijack on 2a06:a005:2730::/44 from AS266970 (NET WAY PROVEDOR DE INTERNET DE CACOAL LTDA) has been detected (based on your address policy you have configured)

[bgp.tools Alert] for AS200676 A hijack on 2a0a:6040:b1f4::/48 from AS266970 (NET WAY PROVEDOR DE INTERNET DE CACOAL LTDA) has been detected (based on your address policy you have configured)

[bgp.tools Alert] for AS200676 A hijack on 2a0a:6040:b1f1::/48 from AS266970 (NET WAY PROVEDOR DE INTERNET DE CACOAL LTDA) has been detected (based on your address policy you have configured)

[bgp.tools Alert] for AS200676 A hijack on 2a0a:6040:b1f0::/48 from AS266970 (NET WAY PROVEDOR DE INTERNET DE CACOAL LTDA) has been detected (based on your address policy you have configured)

BGP is a complete mess.