Eavesdropping is the act of surreptitiously listening to a private conversation, typically between hosts on a network. For instance, programs such as Carnivore and NarusInsight have been used by the FBI and NSA to eavesdrop on the systems of internet service providers. Even machines that operate as a closed system (i.e., with no contact to the outside world) can be eavesdropped upon via monitoring the faint electro-magnetic transmissions generated by the hardware; TEMPEST is a specification by the NSA referring to these attacks.
হার্ডওয়্যার দ্বারা সৃষ্ট হালকা বৈদ্যুতিন-চৌম্বকীয় ট্রাসমিশনের মাধ্যমে একটি বদ্ধ সিস্টেমে শ্রবণকে এনএসএ দ্বারা কী হিসাবে উল্লেখ করা হয়েছে?
TEMPEST