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yes i am new to pi ..what security cycles are you telling me?? can you explain to me??

Actually Google helps a lot here...
I found an old article telling: The security circle is how Pi Network will validate and authenticate transactions once it reaches mainnet. Ideally, the people in it are only the people you trust. Subsequently, everyone in your circle also has their own circle of people they trust. So the chain continues. This chain of social circles makes up the “Network” that is Pi Network.
And more info you can find [here in this Pimentwork link]
(https://pinetwork.atlassian.net/wiki/spaces/WIKI/pages/24772609/Security+Circle)
Basically it's about mining quicker and more...