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No legitimate business here can afford to send spam. They'd be sued to hell and back. What remains are those who think they have found a way to defraud people without the victims being able to trace them.
give you notice of a video message
You know that you can have your lawyer send them a C&D at their cost, right? If they care to maintain the image of being legitimate businesses, they will give in very quickly. Because, unless you have already bought something from them, they're clearly breaking the law, and they're easy to prosecute.
Maybe I'm not representative, because I only run a handful of webpages in german language (and no .de domain), but only a few % of the spam I receive is in German. And of that, more than 90% are the dialer gangs. The small rest gets their ISP (at least) on their heels in a heartbeat. I'm just about to let the hounds loose on one of the largest german mail order houses, btw., because they've started sending newsletters to unverified addresses.
Now I have to wonder who's been leaving me video messages?
Oh, there are other variations as well. Some pretend to lead you to hidden solarium webcam feeds, others camouflage as a personal ad, or make it sound like some person is responding to a personal ad of yours. In the end, any spam in german language that has the slightest erotic undertone is almost certain to lead to a drive-by dialer download. The current telecommunication laws in Germany turn deceptive dialers into a goldmine, because it's almost impossible to track the operators of those numbers through a maze of resellers.