It doesn't hurt to have the computer checked, but Occam's Razor disagrees with the trojan hypothesis.
There are Dutch smartshops offering all kinds of plant matter containing DMT. DMT is now "big", every psychedelic festival is thick with the indole smell of changa. We might not like it, but it's happened: DMT is mainstream, it's a street drug now like weed or speed or MDMA.
So... there are all these smartshops inside the single market that sell DMT raw materials, and let's face it, most people who buy there are extracting to sell. There were DMT lab busts, and the sources were identified. Now there are probably people in the German, French, Polish, etc. police forces whose job is to keep tabs on these companies. What address(es) does Smartshop X usually send from, how can their packages be identified, etc. Years back nobody cared about Mimosa Hostilis, now it's probably the hottest item on police watchlists. So suspected smartshop packages are X-rayed, and MHRB importers are subpoenaed, and probably there have been further DMT lab busts from this.
I heard personally of a similar case not long ago, also Europe. So... I don't think it's smart to order MHRB anymore. What we feared, what was the underlying cause of a lot of the rules on this forum, has happened. We're no longer a fringe they are letting swim, we're prime prey. We need phalaris, because MHRB is going away for good.
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Oh yea and OP, GET A LAWYER AND DON'T TALK TO THE POLICE WITHOUT SAID LAWYER! DON'T ADMIT TO ANYTHING YOUR LAWYER DOESN'T TELL YOU TO ADMIT TO.
Do you believe in the THIRD SUMMER OF LOVE?