Cyber-attack on Sony pictures in 2014 has clearly indicated that the hacktivists have enough technological supports to sabotage one of the most secured service section and business giants. The U.S government suspects that Chinese hackers are penetrating the government's Office of Personnel Management (OPM) last summer as it exposed almost 4 million Federal employee records, including social security numbers. These all instances which prove that these hacktivists are mostly concerned about the sensitive data. The Department of Homeland Security's (DHS) Einstein system is used to find out who committed breaches. Deeper insight in cryptography is therefore required.
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