1. A system for securing online chat conversations, comprising: a chat conversation capture system that captures a chat conversation into an image file; a watermarking system for adding a watermark to the image file to produce a watermarked image file; and a verification system comprising: a watermark extraction system for extracting the watermark from the watermarked image file; and a validation system for validating the watermark, wherein the validation system validates whether the image file has been altered.