An AQI "Code Red Fine Particles Action Day" means the air is unhealthy to breathe. Here's what you should know to help protect yourself.

Had the code been truly random, more sites on the Internet would have been infected before July 19. What has everyone wondering now is if newer, better variations of Code Red will infect more systems.

Ankeny residents received a Code Red alert Thursday, leading many people to ask: What is a Code Red?

What is Code Red? Named after a caffeine drink favored by computer programmers, the Code Red worm takes advantage of a hole in Microsoft's Internet Information Server (IIS) Web server software.

As smoke from Canadian wildfires has made its way into the U.S., it is important to understand how the air quality index works. Here's what each color code means.

In addition to “code red,” Walmart uses other color-coded alerts. For instance, “code blue” indicates a potential bomb threat, while “code green” refers to an active robbery or hostage ...

The air quality in south-central Pennsylvania is being affected by smoke from forest fires in Canada, prompting a Code Red alert.

The Code Red messages that went out to many residents of Hamburg and Lackawanna on Tuesday were alarming: Police were searching for four men who they said could be "armed and dangerous." "Please ...

WORSE THAN CODE RED The EPA uses two more color-coded alerts that are more dangerous than red. A purple alert signifies “very unhealthy” conditions with an air quality index of between 201-300.