My public key have been stolen

hello, Today I found out that my public key has been stolen, The thief had started to comment But when my RC was finished, she could not do anything.

I changed my passwords when I found out.

I guess the message I received about 4 months ago from @romanreigns was related to theft, Please help me, should I take any further action?
@endingplagiarism
@mcsamm
@menfita
@cloudblade
@dalcompapa
@resyiazhari
@giuatt07
@dongfengman
@sexybeach
@xiaohui
@superbing
@