Terrorism has increased its roots quite deep in certain parts of the world as identified internet is a major source of spreading terrorism through speeches and videos. Terrorist organizations use the internet to brainwash individuals .so here to detect this we use our system which works on the principle of web mining, natural language processing(NLP) and supervised learning algorithm to analyze textual data of different web pages and detect patterns, keywords and relevant information in unstructured texts in web pages and messages and after detection taking appropriate action against the web page.