How do you verify a photo validity?

To verify a photo's validity, start by checking its metadata, which can provide information about when and where the photo was taken. Use reverse image search tools to see if the photo has been posted elsewhere or if it has been altered. Additionally, analyze the image for signs of manipulation, such as inconsistent lighting or unnatural shadows, and cross-reference it with reputable sources for context. Finally, consider the credibility of the source sharing the photo.