because the actions required to do so are illegal. This isn't about replacing sites or controlling the C&C machines. That's relatively easy.
To 'take down' the bots in the fashion of the OP means you upload the AVG removal tool so that the bots grab it at some point in their update cycle and run it.
What you've done here is arrange to run code on the infected machines that the owner of the machine is unaware of. Code that is intended to alter software on that machine, and that is illegal in exactly the same way as infecting the machine with the bot virus in the first place.
As the machine's are in the main unidentified and spread all over the world, no one legal entity FBI, SOCA, Interpol etc covers them all within their jurisdiction, or can target only the machines with in it, so applicable warrants and permissions would be practically impossible to obtain.
To 'take down' the bots in the fashion of the OP means you upload the AVG removal tool so that the bots grab it at some point in their update cycle and run it.
What you've done here is arrange to run code on the infected machines that the owner of the machine is unaware of. Code that is intended to alter software on that machine, and that is illegal in exactly the same way as infecting the machine with the bot virus in the first place.
As the machine's are in the main unidentified and spread all over the world, no one legal entity FBI, SOCA, Interpol etc covers them all within their jurisdiction, or can target only the machines with in it, so applicable warrants and permissions would be practically impossible to obtain.