Default password this. Similarly to login details, leaving this unchanged can lead to security issues. Default password Where a device needs a username and/or password to log in, a default password is usually provided that allows the device to be accessed during its initial setup, or after resetting to factory defaults. Manufacturers of such equipment typically use a simple password, such as "admin" or "password" on all equipment they ship, in the expectation that users will change the password during configuration. The default username and password is usually found in the instruction manual (common for all devices) or on the device itself.
Most recent common ancestor Most recent common ancestor In biology and genealogy, the most recent common ancestor (MRCA, also last common ancestor (LCA), or concestor) of any set of organisms is the most recent individual from which all the organisms are directly descended. The term is also used in reference to the ancestry of groups of genes (haplotypes) rather than organisms. The MRCA of a set of individuals can sometimes be determined by referring to an established pedigree. However, in general, it is impossible to identify the exact MRCA of a large set of individuals, but an estimate of the time at which the