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Mahima Bhardwaj
Mahima Bhardwaj

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Network Security Fundamentals

The Connected Globe

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  • With more than 5 billion internet users worldwide in 2022, which represents well over half of the world population , the internet connects
    businesses, governments and people across the globe.

  • Over reliance on internet will continue to grow, with nearly 30 billion devices and "things".

  • Including autonomous vehicles, household appliances and wearable technology, and more connecting to the internet of things(IoT).

  • Nearly 9 billion worldwide smartphone subscriptions using a total of 160 exabytes(EB) of monthly data by 2025.

The Net: How Things Connect

  • In the 1960s, the U.S. Defence Advanced Research Project Agency(DARPA)
    created ARPANET, the precursor to the modern internet.

  • ARPANET was the first packet-switched network which breaks data into small blocks(packets),transmits each individual packets from node to node towards its destination

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