I opened my instagram and saw that i was tagged in a picture. I opened it and instead of tha picture, i saw a porn pic. I got very scared. I went to my newsfeed and there too after a couple of pictures such strange pics showed up. I thought it was a virus and so i downloaded an antivirus app named avast monile security. Im not so good with technology so whatever i understood i did. Then i downloaded avast cleanup and did what i understood. Then i downloaded 360 security and cleaned up my phone again. Still nothing hallened and those pictures continued to come. I am very scared that it is going to spread up in my mobile very fast as i saw one on the internet as well please i need some solution fasstttt. By the way my phone model in galaxy s6