What is cybersecurity?
These are practical techniques that helps in securing unauthorized access to computer systems and personal digital data.
What is CAI Triad?
The Triad is the core of every system which is grounded on three powerful principles...
Confidentiality: Every system should be take full responsibility on all data and ensuring that only the rightful owner got accesses to their data.
Integrity: All data should stay true as intended by the beholder, and if altered the by a third party, the system should be able detect and be notified.
Availability: The system should be able to grants authorized user accesses to the resource they need when they need them.
Client Server Model
Communication between the Client(Browser) and the Server(Remote Computer)
Some vital things a notice here was
URL(Uniform Resource Locator): i.e. the human readable address e.g. www.hillspere.com
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DNS(Domain Name Server): This DN Server is responsible for responding to the client request by sending the unique number (IP address) pairing with the URL to the client.
- IP address is a unique number that identifies a device on the internet.
HTTP/HTTPS Basics
- HTTP/HTTPS: For the client and the server to communicate, a protocol is used, the client sends a request called HTTP(HyperText Transfer Protocol) or the HTTPS(the secured version) request to the IP address of the server to fetch anything from the server.
Some hands-on practical on a webpage using the browsers developers tool (Network tab)
bfCache (Back Forward Cache): This is an inbuilt optimizer in chrome browsers that enhance webpage's response time by default though some practice can hinder its functionality which is when you set in the control headers
Response Headers
Request Headers
Its was an awesome one on my Day 1 journey I have learnt a lot from the above summaries am open to corrections and constructive critics see you all tomorrow.
Chao!!!
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