Routing attacks on the Lightning Network pose security threats and can affect the network's effectiveness and users' financial risks. Routing attacks involve tactics such as imposing high routing fees, spreading false information, diverting payments, and compromising user privacy. To protect against routing attacks, users should utilize watchtowers, verify channel state changes, prioritize well-established payment channels, choose trusted nodes, diversify channels, monitor channel activity, and stay updated with the latest software updates.

https://cointelegraph.com/news/identify-and-protect-against-routing-attacks-in-the-lightning-network