The AF prevents computers that process classified information from emitting radio signals and this is known as _____.

The AF prevents computers that process classified information from emitting radio signals and this is known as _____.

• A. Emissions Security (Emsec)
• B. Information Security (INFOsec)
• C. Operations Security (OPSEC)
• D. Physical Security

Answer: (A)

Emissions Security, or Emsec, addresses preventing the radiated signals that devices processing classified information might emit from being intercepted. When computers or other equipment handle sensitive data, their electronics can leak radio emissions that an observer could capture and interpret. Emsec focuses on reducing or masking these emissions through shielding, proper cabling, enclosure design, and standards like TEMPEST, so no useful information leaks via radio waves. The other areas protect different aspects—Information Security safeguards the data itself, OPSEC guards operational details from being observed, and Physical Security covers access and the physical environment. Since the scenario is about preventing radiation from processing equipment, Emissions Security is the best fit.

Emissions Security, or Emsec, addresses preventing the radiated signals that devices processing classified information might emit from being intercepted. When computers or other equipment handle sensitive data, their electronics can leak radio emissions that an observer could capture and interpret. Emsec focuses on reducing or masking these emissions through shielding, proper cabling, enclosure design, and standards like TEMPEST, so no useful information leaks via radio waves. The other areas protect different aspects—Information Security safeguards the data itself, OPSEC guards operational details from being observed, and Physical Security covers access and the physical environment. Since the scenario is about preventing radiation from processing equipment, Emissions Security is the best fit.