Wait, but the user specifically mentioned the echococo.com link. I should check if that site is known for distributing illegal content. If it is, I need to advise them not to use it. If not, maybe the site is legitimate but just hosts MKV files. Let me do a quick check. I'll search online for "www.echococo.com/mkv link" to see what comes up. From what I see, it doesn't bring up a legitimate site I recognize. It might be a scam or a phishing site. So, definitely a red flag.