Across
- 1. appearing suddenly: such as. computing: appearing suddenly on a screen over another window or display. a pop-up window. a pop-up ad.
- 2. A firewall is a network security device that monitors traffic to or from your network. It allows or blocks traffic based on a defined set of security rules.
Down
- 1. the fraudulent practice of sending emails or other messages purporting to be from reputable companies in order to induce individuals to reveal personal information, such as passwords and credit card numbers.