Picpac.info indicates the presence of browser hijackers somewhere in your system. Yes, unfortunately, you have a parasite on board and you have to take measures. Hijackers are extremely annoying. They meddle with your previously normal browsing experience without any kind of permission of yours. But they also pose a threat to your privacy. Aside from all the interruptions that we are going to explain in a minute, this pest puts your private life at risk.