For research purposes, Hsiao-pao collected articles on parenting shared by netizens for a thesis related to online parenting. Which of the following statements is correct? (1)Searching for articles by others on the Internet without consent may violate information privacy. (2)Even with quoting or paraphrasing, and with indicating the source, using an article without the consent of the original author violates copyright. (3)Capturing pictures and videos outside the window of a netizen's house to observe real-life childcare in their home may infringe on spatial privacy. (4)All of the above constitute inappropriate and illegal behavior and should be conducted with caution