Adversarial Fork - temporary - Actually cheating nodes
Name ID Blocks
[VIPER] Viper Stake Pool 5574cefe9c9619f9a7a0abaa846ec84015a250967db655346a2f994e8e6a0bc2 #229196
[CHARM] CHARMADA 472b7901ee81b182e9622b99991dcf8e85d3383f04c33f872055f0ba4dd4bae6 #230595
[2EMUR] EMURGO’ STAKEPOOL f989090208512a2d56aed13b81c98407b10ba04fde3b8d4a3442b8b25368f512 #229882
Adversarial Fork - permanent - A lot of forks in ITN
Name ID Blocks
[SCAN] AdaScan Pool 03b9ebbc1b605a9e67e82fc5a6f867a62b6bc5e5e16bb10a0a0aaddc2eed7da7 #232346
[LION] Lion's Stake House bb964366836069c447e737e6c7d442c76736202623ac401188639905287d17da
[FRGL] frugalpool 1171304154a20bd28cae430c7e9c915e5bdc1eec69893dc69d7267be7197ae21
[BOI] ADA Boi 4990006a4cfe110a072f9f67bf2cd3ebf42db2378aa31767d9bc67dfa2317329
[LION4] Lion's Stakehouse 4% 652ac1d9293c2d3f8ffbf40835e26cbf547f057fa8d325562069989c60fa895b
[SCAN1] AdaScan Secondary Pool f1c96724cbe54075c3d045cd40a7385ecc4b24b4fb03f721cba0b3fdc4b513a2 #229932 #230103 #230542 #230755 #231559 #231622 #232197 #232294
[SCAN2] AdaScan Pool #3 56e00aab110e6c27aa304c3a7f9d8626a91526987f644e58c6d6b134a94749d8
[LION1] Lion's Stake House 1% 20bb3097a4520d3fb6fd1f33ae5f8c6dd7f2cb23bc5cf0f04b5647fe1a8b612c

Adversarial forks - when one pool have multiple instances with same keys and is creating more than one block

Data source: our own research from multiple nodes + datafeed by pooltool.io - thanks Carp!