Potential issues: Using unofficial sources can expose users to malware or phishing. Also, the streams might be unstable or low quality if obtained from unreliable sources. Highlight the risks involved.

Next, why do people want high-quality streams? Maybe they care about clear video for their devices or prefer watching on larger screens. Alternatively, they might be in regions where JTBC isn't available, so they seek alternative ways. It's important to highlight the reasons but also stress the importance of legal alternatives.

Then, how to access these M3U8 files. Are they public? Probably not, since most live channels require proper authentication. Maybe the user is looking for existing M3U8 URLs for JTBC. Some services might provide these, but again, legality is a concern.