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You need the lab to do this, and for anyone that has lab access the actual doing - multiplying some viruses - is trivial
thing is, i'm not sure about the lab access requirement. i'd expect any number of diy techniques to be functional substitutes. brb, asking chatgpt for more details.
I've learned a lot and its very fascinating. I haven't found another maker online doing anything remotely similar. He's like the NileRed for genetic engineering instead of chemistry.
You're off by at least 3 orders of magnitude.
There are 18 million undergrads in the US alone. I would bet that at least half have some sort of basic bio lab class and can use a lab, or has a friend that does and would let them in. There's zero security in undergrad bio labs.
edit: and one obvious error, it's graduates with molecular biology degrees, presumably the undergrad population is ~5x larger, for a total of 20k. and presumably the world is larger, so we can throw in another ~5x factor for a total of 100k. still, /orders of magnitude/ smaller than world population with access to the Internet.
there are a /lot/ of broken people in the world. i'd sleep more comfortable they don't get access to step by step instructions in their local language on how to design and spread the next .*pox plague at the cost less than eg a motorcycle.