Security and Data Management

Security and Data Management

1. Compression

   • Lossless compression
     • Uses an algorithm that compresses data into a form that may be decompressed at a later time, without any loss of data.
     • A simplified version of this compression could be replacing 'the' with a token such as '@' .
   • Lossy compression
     • A technique that compresses a file by discarding some of the data to reduce the amount of data that needs to be stored.
     • compression ratio = ORIGINAL FILE SIZE / COMPRESSED FILE SIZE

2. Network security and data management

   • How to keep data Secure
     • Anti-virus software
     • Firewalls
     • Two-factor authenitication
     • Access levels
     • Passwords
     • Aministrator
     • Encryption
   • Dangers of being on a Network
     • Risk of hacking
     • Risk of viruses
     • Technical Breakdown
     • Interception
   • Acceptable user policy