Chainalysis reports all the reasons crypto can be seized and the patterns and structure of known illegal wallets, they also say if another wallet even has 10% of its crypto from a dirty wallet it too can be seized when it goes to cash in on a crypto exchange
Recent Chainalysis thread:
https://archive.4plebs.org/pol/thread/518476506/
https://www.coinspeaker.com/chainalysis-flags-75b-in-illicit-crypto-as-governments-eye-strategic-reserves/
https://www.chainalysis.com/blog/landscape-of-seizable-crypto-assets-2025/