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Cybersecurity To Everyone, Further action, image, Autonomous system:…

- - - - Vision in the future: large volume of data can transmitted by computer; breaking data called packets and move around; prototype network connect to telephone line; create model; need capital (no money)?; place to create model
    - - A group of researcher (academic aspiration), fundamental required, how to create model?, where to get resources?--Lawrance move to DARPA(government)-->DARPA funds ARPANET with UCLA, Standford..-->Project prove that packet can move from different area
      - Internetwork: computer can communicate through the independent network; ARPANET starts packet switching (proven), Protocol invented: Network Protocol & Transmission Control Protocol to send packets
      - Rules of Internetwork: Network independent, Packets transmitted allow communication, if not accept then retransmit; black boxes allow network connection, no global control (not own by government and private)
      - Origin: only handful network exist, only a few networks can connect, only create 256 networks
      - Surprise :D a few devices can connect to network, File transfer Protocol invented, invent Telnet (LOGIN PURPOSE), mail invented (send msg)
      - Challenge will be faced: how internetwork can evolve and apply with other new technoligy? (Government fund and develop bench scale prototype)
    - - Ethernet invented (wired computer networking allow to combine using other tech. ta the same time.
      - Network technology (standardtised) developed; move to business en; DNS and routers created; can translate computer language to human readable language (8.8.8.8 --Google)
      - Community ownership: Public availability documents of specifying protocol (public use)-->more growth and adoption of new tech.-->growth in quantity-->move out from lab (will accelerate adoption) *Internet is not owned by anyone
- - - - Application Layer: PC will connect to DNS to find out the routes (IP address) [PC--> Local DNS (domain)--> root DNS (find .com/.edu)-->Local DNS to confirm-->Top-level DNS (google.com)-->local DNS-->Autoratative DNS (IP address)-->Local DNS --> PC
    - - Autonomous System will be applied--apply peering relationships, broadcast list of independent network ( to communicate and see which routes is suitable) , forward packets to the network and send and reach to the IP address
      - NetWork layer : IP assemble data from layer above (transport layer/session..) into a packet with adress header and act , link to envelope to send to destination
    - - Electronmagnetic spectrum applied, data encoded can move from different points
      - Fibro Optic, data move for long distance; Microwave, data can move from point-to-point (near distance); Satallite, data move from radio wave
      - IXP (Internet Exchange Point) allows 3 mediums connect together with logical peering relationship (network connect)
- - - - low skills, light resourced, use off the shelf現成 tools, engage activities that can increase their reputation
      - motives: curiousity (where the vulnerability lie), easily cross the line and violate integrity of data拉響警報器，might impact access to device
      - tools: kali linux (reconnaissance, delivery and exploitation)
      - ways to attack: defacement(destroy) website, guessing password, SQL injection, denail (deny) of service, google hacking
    - - low to high skills, high resourced, use off the shelf tool/ capable create own tools, join event that earns return, might connect to government or security organisation
      - motives: financial gain, use of various tool to involve online fraud, extortion勒索，theft, espionage (spy) purpose
      - tools: kali linux (custom reconnaissance, tactic and delivery and exploitation)
      - ways to attack: ransomware (encrypt data and demand money), denail service (not allow to use for some application unless pay), SQL injection (control web to display data from data store), guessing password, access Point of Sales (POS) to steal credit card number
      - examples of organisations: wolf spider, skeleton spider, FIN7,GozNym,