The relevant law on this matter is the Personal Data Protection Act B.E. 2562 (A.D. 2019).
When the media reports on a case, the media is not legally required to blur the faces of individuals accused of a crime, as the media is protected under the law. However, an exception applies when the accused is a minor, a child or juvenile in such cases, the law explicitly requires their identity to be concealed.
In practice, many media outlets choose to blur images regardless of whether the accused is an adult or a minor. This is often done as a precautionary measure to avoid potential legal or ethical issues in the future.
For private individuals who are not part of the media, the situation is different. If someone shares news or images on social media, they do not receive the same legal protection as the press. If they post a photo of another person without blurring it even if the information is true and it causes harm to that person, they could be held legally responsible under this law.
Rujira Bunnag