What is Eavesdropping? What security measures can take up to prevent
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Answer:
An eavesdropping attack, also known as a sniffing or snooping attack, is a theft of information as it is transmitted over a network by a computer, smartphone, or another connected device.
As with most things security, an ounce of prevention is worth a pound of cure. Here's a rundown of the best ways to prevent network eavesdropping attacks:
>Encryption. First and foremost, encrypt email, networks and communications, as well as data at rest, in use and in motion. That way, even if data is intercepted, the hacker will not be able to decrypt it without the encryption key. For wireless encryption, Wi-Fi Protected Access 2 or WPA3 is recommended. All web-based communication should use HTTPS. Note, however, that while most data can be encrypted, network traffic metadata, such as endpoints and IP addresses, can still be gathered via a sniffer.
>Authentication. Authenticating incoming packets is key to preventing spoofed packets that are used to perpetrate IP spoofing or MAC address spoofing attacks. Use standards and protocols that provide authentication. Most cryptographic protocols, such as TLS, Secure/Multipurpose Internet Mail Extensions, OpenPGP and IPsec, include some form of authentication.
>Network monitoring. Security teams should constantly monitor networks for abnormal activity by using intrusion detection systems or endpoint detection and response software. Security teams should also use the same sniffer programs that nefarious actors use to detect vulnerabilities on the network.