Attacks against the routing system are increasing, and it's not uncommon in today's Internet world to experience prefix hijacking. The IETF has for a while, been woking on an Internet Resource Public Key Infrastructure, to help validate routing (BGP) announcements.
Details on RPKI and how this works is best followed up through your RIR. The RIPE-NCC in particular has excellent resources for you to peruse, and another excellent set of guidelines is available at https://rpki.readthedocs.io. INX runs separate workshops on IRR and RPKI usage, so look out for our announcements, and join the classes.