Brief introduction on wallets(what they are and how to safely have one)

Everybody uses online wallets but are they safe?🧐
Online services giving you a wallet to deposit your coins are not as safe as you think.😨
Wallets are "composed" by 2 keys (a serie of characters):🤔
➖The first one is called PrivateKey, it is used to generate the public keys (as many as wanted) and sign outgoing transactions for the public keys;📝
➖The second one is called PublicKey, as said it is generated by the PrivateKey, and its only role is to receive the coins.📥
They look like this:
➖PrivKey "5JduDPmHCauhCgqysDru3nhnArAg93cq82Dswr9bHeNEPke8BPc";
➖PubKey "1JxSiCA8qMjgkc11WDDDF7Y6YK1k16ryxi".
(don't use them as personal wallet 😂)

All the online wallets give you only the public key and they keep secret the private one.😈
This simply means that you never really own any coins, you just display a number on your wallet account.😥

Instead there are some devices called "Cold wallets" which commonly are Ledger or Trezor, who let you handle directly the Private Key.🤲

Those are devices who are 100% of time offline and they are only connected to a computer to create a new public key and sign transactions for the public keys.👮‍♀️
The security level is very high since the only data goin in and out the devices are transactions requests/signed transactions and public keys generation requests/generated public keys.👀
Depending on the device the Private key may even not be accessible to the user itself for an higher security.🔓

The online wallets are called "custodials" because they keep custody of your coins since you don't really handle them.😢
They can be compared to a bank holding your coins. Instead having a cold wallet can be compared to having cash.💵

Some online wallets lets you add the private key to your account so that they can handle them too for you. (But i personall don't recommend it)🙄

If we wanna compare risks, having online wallets is more risky because they are continuously studied by hackers wanting to attack them and steal sensitive data such as personal data and private keys.👎
On the other side the only risk on cold wallets comes when someone manually tampers the devices and resells them. (which is easy to avoid).👍

You may have heard online of paper wallets, those are considered the safest, but of course they need higher knowledge to be created and used.🤓
Briefly, there are websites who casually generate a private key from there. Users can print them on a piece of paper and use the private key with advanced tools to sign transactions and create public keys.💻