request suggestions to detect bgp hijack events
Source Reddit NetSec
Description
This post describes a method to detect BGP hijacking events by comparing BGP route announcements against authoritative IP/ASN mappings from IRR databases. The approach involves crawling live BGP stream data and flagging discrepancies where the originating ASN differs from the registered ASN in IRR data. While this is a detection technique rather than a direct threat or vulnerability, BGP hijacking itself poses significant risks to network confidentiality, integrity, and availability. European organizations relying on BGP for internet routing could be impacted by such attacks, especially critical infrastructure and large ISPs. The method described could help defenders identify suspicious route announcements quickly. However, the post is more of a community-shared detection approach than a report of an active exploit or vulnerability. Mitigation involves deploying real-time BGP monitoring, validating route origins with RPKI, and collaborating with regional internet registries. Countries with large internet exchange points and critical network infrastructure, such as Germany, the Netherlands, France, and the UK, are most likely to be affected by BGP hijacks. Given the nature of the content, the severity of the underlying threat (BGP hijacking) is high due to potential widespread impact and ease of exploitation by motivated attackers.