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#eavesdropping is the act of secretly listening to the private conversation of others without their knowledge. Eavesdropping is considered illegal because the listener can use the heard thing wrongly.

For example, listening to someone's credit card password being spoken is called eavesdropping.
Eavesdropping occurs when a hacker intercepts, deletes, or modifies data being transmitted between two devices.

Eavesdropping is also known as #sniffing or #snooping , Eavesdropping attack cannot be performed very easily, this type of attack is very difficult. Attack by eavesdropping can be understood in this way,

When a user connects to a network that is not secure, that is, traffic is not secured or encrypted, and the user sends some kind of sensitive business data to another user through this network.

So this data is transmitted in a kind of open network, in this type of network the attacker gets a chance to exploit this data easily and in different ways.

Attackers use different types of methods to attack by eavesdropping, in which different types of eavesdropping devices are generally used to listen to conversations and review network activity.

Modern time's computerized phone system is of this type which makes it possible to intercept the phone electronically from a distance without direct access to any device.

Attackers send signals to the telephone line through the new computerized phone system
And track any conversations that happen on the phone, even if the telephone is not in active state. Means it is not being put on,

Similarly, computers have sophisticated communication tools, which help eavesdropping attackers to track communication activity, voice conversations, online chats, and even what the user is typing.

Computers also emit electromagnetic radiation, which sophisticated eavesdroppers can use to reconstruct the contents of a computer screen.