How can one avoid forbidden things on the Internet such as images, music, and the like?

The best way to avoid forbidden things on the internet is for a person not to access them unless they possess a strong resolve and unwavering faith that prevents them from engaging in the forbidden. For those who lack such resolve, they must distance themselves from the causes of temptation. As for someone who needs to use the internet, they should not visit every site; rather, they should suffice with what is free from forbidden content. If a forbidden image appears, they should close it immediately. One must repel the first thought when it arises, because what follows is a consequence of it. It is also necessary to beware of bad companions, both online and offline, and not to open messages that suggest promotion of the forbidden or those whose source is unknown and whose safety has not been verified. And let him remember that Allah is observing him and that he is accountable for his time.