In 1995 and 1996, a program called PKZIP30.EXE was placed on many Internet software libraries. This purported to be 3.0 beta release of the well known file compression program PKZIP |
Unfortunately, downloading this program, caused ones disk to be erased ...... |
This is equivalent to a crook turning up at your door in a fake Niagara Mohawk (or what have you) van. In real world, if we are careful, we ask to see credentials of purported service person. |
In Web security, one needs digital signatures to establish the credentials of a particular program -- in particular one would expect that PKZIP30.EXE be digitally signed by PKWare the company that created PKZip |
Certification Authorities supply "Software Publisher's Certificates" from "certification authorities" who presumably verify credentials of the organizations that they are certifying |