  The Internet has become an essential part of children's and adolescents'
daily life. Social media platforms are used as educational and entertainment
resources on daily bases by young users, leading enormous efforts to ensure
their safety when interacting with various social media platforms. In this
paper, we investigate the exposure of those users to inappropriate and
malicious content in comments posted on YouTube videos targeting this
demographic. We collected a large-scale dataset of approximately four million
records, and studied the presence of malicious and inappropriate URLs embedded
in the comments posted on these videos. Our results show a worrisome number of
malicious and inappropriate URLs embedded in comments available for children
and young users. In particular, we observe an alarming number of inappropriate
and malicious URLs, with a high chance of kids exposure, since the average
number of views on videos containing such URLs is 48 million. When using such
platforms, children are not only exposed to the material available in the
platform, but also to the content of the URLs embedded within the comments.
This highlights the importance of monitoring the URLs provided within the
comments, limiting the children's exposure to inappropriate content.
