It's possible, but it doesn't mean that the law will support the legality of this IOU, because only the signature is yours, the contents on it are forged by others, and the loan transaction also needs vouchers, so in fact, even if others forge IOUs, they will not be supported in the end.

If the creditor who holds the IOU claims rights from you, he can argue that the IOU is forged. If the creditor is a person who forges debts, he can report to the public security organ that he is suspected of fraud.

First, the legal effect of the iou signature:

1. The signature on the IOU confirms the validity of the IOU.

2. The signature of the borrower column is the content specified in the approved IOU. If someone forges a signature, the forged signature is invalid for me, and I will not bear legal responsibility.

3. If the authenticity of the signature cannot be confirmed, you can apply for handwriting identification to confirm it.

Second, how to avoid these disputes:

1 Of course, you should not sign on blank paper, even if the other party requests it.

2. When signing, you must write down the contents on paper, that is, you must write the purpose of signing.

Don't leave blank when writing content, especially between content and signature. The loan amount must be capitalized, and lowercase can be indicated in brackets after capitalization.

It's best to make a copy of the IOU and ask the other party to sign the copy.