Crack (password software) on improving the code and introducing more flexibility, such as the ability to integrate other crypt() variants such as those needed to attack the MD5 password hashes used on more modern Unix, Linux and Windows NT systems. It also bundled Crack v6 - a "minimalist password cracker" and Crack v7 - a "brute force password cracker". Randal L. Schwartz, a notable Perl programming expert, in 1995 was prosecuted for using Crack on the password file of a system at Intel, a case the verdict of which was eventually expunged. Crack was also used by Kevin Mitnick when hacking into Sun
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