From Halopedia, the Halo wiki
The second episode of Iris began with mysterious postings on several job listing sites and MSN, leading to the discovery that a group named Flood Containment Control was hiding data about something on several kiosks behind a "false menu item". The information on these kiosks lead to the discovery of a report named "Report 206" which assisted people finding the second server. The second server detailed the Flood, revealing information about the initial thoughts the Forerunners had about them.
Flood Containment Control
On July 6 nattyhaze on arg.bungie.org discovered via Google numerous classified postings for a company called Flood Containment Control (text displayed on the Slide_Ref070107.jpg), containing an image with the original 'closed' version of the glyph. The ads contain the phone number, (888) 778-5672, which has an interesting recording.
On July 7, the message on the Flood Containment Control call number has changed to a conversation between two men. Of note is a reference to "402-K-07-002". suitedjock Googled the number, which lead to an EPA webpage referring to a booklet "EPA 402-K-07-002", Flood Cleanup and the Air in Your Home. The National Institute for Occupational Safety and Health (or NIOSH) is the United States federal agency responsible for conducting research and making recommendations for the prevention of work-related injury and illness. NIOSH is part of the Centers for Disease Control and Prevention (CDC) within the US Department of Health and Human Services. The new recording says this:
On July 8, the recording changed, and the following was recorded:
On July 10, Episode 2 opens at Halo3.com. The "Servers" have been renamed to "Episodes". One of the files that you can download from episode 02 is a .wav file entitled 719 Hz. The sound file contains garbled noise, but if you run it through a program called Spectogram, then it creates a picture of what appears to be a melting and misshapen clock. The image can also be attributed to look like a blurry version of "The Device", which can be accessed through the Halo 3 website. It is hidden inside the concept art section, which could be the reference to being "hidden behind a false menu item" from the Flood Containment Control call number. http://img27.picoodle.com/img/img27/9/8/24/t_719HzImagem_f7c4488.jpg Image