How secure are GUIDs? Can I use it to generate passwords?

Raymond ChenJuly 1, 2015Jul 1, 201507/1/15

GUIDs are globally unique identifiers, and given their rather incomprehensible presentation, some people may be tempted to use them (or parts of them) as passwords. For example, one person wondered whether it was okay to use the first eight characters of a GUID as a temporary account password. This is a really bad idea. GUIDs are designed for...