State the term - Lot of care required while programming

It is a common and well-known saying that many developers of "secure systems" leave a "back door" way for themselves so that they can get into the system bypassing the secure front door.

The big problem is that often the companies owning the web servers or Intranets have so many contractors and newly recruited programmers writing critical code who do not know the intricacies of the system security. The code never being reviewed causes the greatest concern.