Malware attack is

You may use unsecured public Wi-Fi networks for shopping and banking online

You should not respond to an email, text or message asking for financial, personal or security information.

It is a cyberattack like Trojan designed to enter and destroy your computer system or to steal personal data:

Designed to detect and destroy suspicious activity or virus

A network security device that monitors incoming and outgoing network traffic and decides whether to allow or block specific traffic based on a defined set of security rules: