The 1997 AS7007 incident showed how unfiltered BGP input, pathological deaggregation, and global route propagation could make one provider's mistake disrupt the wider Internet.
China Telecom's 2010 routing anomaly caused tens of thousands of foreign prefixes to appear through its network, revealing both BGP policy weakness and the limits of public routing evidence.
The 2019 Verizon route leak showed how a BGP optimizer, weak customer filtering, and more-specific prefixes could divert traffic for major Internet services through a small network.