Someone is signing for me without my permission - how do I stop this?

[Helpmeplease345]

I had to sign a document for a business. I added my signature to the document - today I recieved automatic emails that I "signed" two other documents. I never signed them, they somehow used my signature to sign the documents. How do I turn off this feature and how do I remove my signature? I dont know what happened.  I dont know if they saved my signature to their business account or what. I am going to flag it for reported abuse but in the mean time is there anything I can do on my side to make sure they never use my signature again? In all instances ,even the time I did sign, it says:

My name

My email

Role: Signer

Authentication: None

Delivery: Email

Identity check: None

[ls_rbls]

Hi @Helpmeplease345 ,

Please review the information provided on the website linked below, and address your issue through the appropriate Adobe security channel(s):

https://helpx.adobe.com/security/alertus.html

[shaktikeshri]

Hi @Helpmeplease345 

Will it be possible to share the problematic PDF to see of they are signing using your signatures or similar signature. How are yu validating that it is your signatures?

Thanks,

Shakti K