The NCSC also has a similar service to the Canadian approach you mention, Protected DNS - https://www.ncsc.gov.uk/information/pdns I believe CISA in the US has something similar too.
This is from Ross Anderson’s book on Security Engineering. Recommended. https://www.cl.cam.ac.uk/~rja14/book.html
Nice little write up. Rather than using the USRP I'd probably use a LimeSDR, if you can get hold of one.
The NCSC also has a similar service to the Canadian approach you mention, Protected DNS - https://www.ncsc.gov.uk/information/pdns I believe CISA in the US has something similar too.
This is from Ross Anderson’s book on Security Engineering. Recommended. https://www.cl.cam.ac.uk/~rja14/book.html
Nice little write up. Rather than using the USRP I'd probably use a LimeSDR, if you can get hold of one.