Since　2022,　ChatGPT　has　been　a　big　breakthrough　in　technology,　creating　lots　of　discussions　online.　It　has　had　big　effects　in　different　areas,　but　in　cybersecurity,　it　is　both　good　and　bad.　There　has　been　a　lot　of　misuse,　especially　with　squatting　domains.　Our　research　aims　to　understand　this　misuse　and　the　potential　threats　it　poses.　We　develop　a　novel　method　that　looks　at　historical　Passive　DNS　(PDNS)　data.　Based　on　the　two-stage　identification,　our　method　can　efficiently　and　accurately　collect　ChatGPT-related　squatting　domains.　In　the　end,　we　found　over　1.3　million　ChatGPT-related　squatting　domains,　part　of　which　were　shared　with　the　security　community.　Our　findings　show　that　these　squatting　domains　are　increasing　quickly.　This　is　the　case　whether　the　keywords　related　to　ChatG　PT　are　registered　with　the　domain　registrar　or　set　up　on　sub　domains.　Even　though　the　number　of　domains　is　increasing,　only　5.3　%　set　up　meaningful　content　on　their　websites.　After　digging　into　their　web　contents,　we　found　that　these　web　sites　show　various　signs　of　misuse,　such　as　promotion　on　illegal　underground　websites　and　emerging　fraudulent　activities　related　to　dialogue　features.　The　security　community　is　not　fully　aware　of　these　threats　yet.　We　are　the　first　to　conduct　a　large-scale　quantitative　analysis　of　ChatGPT-related　abusive　behavior.　We　believe　that　our　work　unveils　the　abuse　ecosystem　surrounding　ChatGPT-related　squatting　domains.　We　hope　to　underscore　the　urgent　need　for　increased　attention　and　protective　measures　against　ChatGPT-related　domain　abuse.　　©　2024　IEEE.