Big Data and Privacy

Big Data and Privacy

1. Privacy

   • Cryptography
     • Cipher
       • Caeser
         • In cryptography, a Caesar cipher, also known asCaesar's cipher, the shift cipher, Caesar's code orCaesar shift, is one of the simplest and most widely known encryption techniques.
       • Random Substitution
         • In cryptography, a substitution cipher is a method of encrypting by which units of plain-text are replaced with cipher-text, according to a fixed system; the "units" may be single letters (the most common), pairs of letters, triplets of letters, mixtures of the above, and so forth.
       • Vigenre
         • The Vigenère cipher (French pronunciation: ​[viʒnɛːʁ]) is a method of encrypting alphabetic text by using a series of interwoven Caesar ciphers based on the letters of a keyword. It is a form of polyalphabetic substitution. ... Many people have tried to implement encryption schemes that are essentially Vigenère ciphers.
     • Public Key Cryptography
       • Public key cryptography, or asymmetrical cryptography, is any cryptographic system that uses pairs of keys: public keys which may be disseminated widely, and private keys which are known only to the owner.
       • Keys/Passwords
         • Public Key
         • Private Key
       • Modulo
         • the name of the mathematical operation. Modulo gives the remainder from dividing two numbers.
     • Decrypting
       • Decryption. Decryption is generally the reverse process of encryption. It is the process of decoding the data which has been encrypted into a secret format. An authorized user can only decrypt data because decryption requires a secret key or password.
     • Cracking
       • A cracker is someone who breaks into someone else's computer system, often on a network; bypasses passwords or licenses in computer programs; or in other ways intentionally breaches computer security.
     • Encyption
       • the process of converting information or data into a code, especially to prevent unauthorized access.
       • Symmetric Encyption
         • Symmetric-key algorithms are algorithms for cryptography that use the same cryptographic keys for both encryption of plaintext and decryption of ciphertext
       • Asymmetric Encyprtion
         • Public key cryptography, or asymmetrical cryptography, is any cryptographic system that uses pairs of keys: public keys which may be disseminated widely, and private keys which are known only to the owner.
     • Computationally Hard
   • Cyber Security
     • DDOS attack
       • In computing, a denial-of-service attack is a cyber-attack where the perpetrator seeks to make a machine or network resource unavailable to its intended users by temporarily or indefinitely disrupting services of a host connected to the Internet
     • Phishing
       • the fraudulent practice of sending emails purporting to be from reputable companies in order to induce individuals to reveal personal information, such as passwords and credit card numbers.
     • Digital Certificates
       • An attachment to an electronic message used for security purposes. The most common use of a digital certificate is to verify that a user sending a message is who he or she claims to be, and to provide the receiver with the means to encode a reply.
     • Antivirus Software
     • Firewall
     • SSL/TLS
       • Secure Sockets Layer/ Transport Layer Security - An encryption layer of HTTP that uses public key cryptography to establish a secure connection
     • Virus

2. Big Data

   • extremely large data sets that may be analyzed computationally to reveal patterns, trends, and associations, especially relating to human behavior and interactions.
   • Cost of Free
     • Your Online Presence
   • Moore's Law
     • Double the amount of computing power every two years

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