One of the larger insight that Snowden gave was that agencies dealing with data gathering does so through several avenues simultaneous rather then relying on a single method. They request the data from companies, intercepts the cable traffic between ISP&#x27;s, plants backdoors in protocols and servers, do MiTM, uses malware, and so on all in parallel. Reproducible builds won&#x27;t &quot;shut down&quot; the CIA but it will increase the security of compilers and protect Debian&#x27;s build system which would otherwise be a prime target for attacks that could compromise a very large number of users.