CO2: Should only be used in unmanned areas. It is colorless and odorless and causes people in it to pass out and then die. Staff working in an area of their organization where CO2 is used should be properly trained in CO2 safety.

Mitigation: Reduce the impact, and likeliness of a disaster.

MTBF (Mean Time Between Failures): How long a new or repaired system or component will function on average before failing, this can help us plan for spares and give us an idea of how often we can expect hardware to fail.

CSMA CA (Carrier Sense Multiple Access Collision Avoidance): Used for systems that can either send or receive like wireless. They check if the line is idle, if idle they send, if in use they wait a random amount of time (milliseconds). If a lot of congestion the client can send a RTS (Request To Send), and if the host (the wireless access point) replies with a CTS (Clear To Send), similar to a token, the client will transmit. This goes some way to alleviating the problem of hidden nodes, in a wireless network, the Access Point only issues a Clear to Send to one node at a time.

SAML (Security Assertion Markup Language): The single most important requirement that SAML addresses is web browser SSO. An XML-based, open-standard data format for exchanging authentication and authorization data between parties.

Remember people are always more important to protect than stuff.

The KDC (Key Distribution Center) consists of the AS (Authentication Server) and the TGS (Ticket Granting Server).

Digital forensics: The evidence we collect must be accurate, complete, authentic, convincing, admissible. To ensure the disk is not written to and inadmissible, we can use a write blocker. For instance, a Tableau write blocker. Everything is documented. Chain of custody: who had it when? What was done? When did they do it? Pull the original, put it in write protected machine, we make a hash. We only do examinations and analysis on bit level copies. We confirm they have the same hash as the original before and after examination.

Full backup: This backs everything up, the entire database (most often), or the system. A full backup clears the all archive bits. Dependent on the size of the data we may do infrequent full backups, with large datasets it can take many hours for a full backup.

Reciprocal Agreement site: Your organization has a contract with another organization that they will give you space in their data center in a disaster event and vise versa. This can be promised space or some racks with hardware completely segmented off the network there.