From driftnet surveillance to data mining and link analysis, the secret state has weaponized our data, "criminal evidence, ready for use in a trial," as Cryptohippie famously warned.
No longer the exclusive domain of intelligence agencies, a highly-profitable Surveillance-Industrial Complex emerged in the 1980s with the deployment of the NSA-GCHQ ECHELON intercept system. As investigate journalist Nicky Hager revealed in CovertAction Quarterly back in 1996:
The ECHELON system is not designed to eavesdrop on a particular individual's e-mail or fax link. Rather, the system works by indiscriminately intercepting very large quantities of communications and using computers to identify and extract messages of interest from the mass of unwanted ones.