>in our security infrastructure

Most human security exists in a passive measure. Most of us don't want do die. And those that want to die rarely have the intelligence and means to take out a whole shitload of other people with us. To take out a lot of people you tend to need to work with other people which drastically increases the risk of a defector and your plan failing.

>Why would a biolab capable of making something like be unregulated?

Because every day things like this become easier and easier. You hear about crap like illegal wet labs in the US.

https://www.lawfaremedia.org/article/two-illegal-biolabs-rev...

Want to buy some custom designed genes?

https://www.idtdna.com/pages/products/genes-and-gene-fragmen...

And none of this would be counting labs in other countries that don't give a shit about regulations.