You locked the front door, but did you neglect the back?

You can't be too safe in todays distributed environment.  The following details how:
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Locking the backdoor: Reducing the risk of unauthorized system access

There are multiple kinds of "backdoors" that can be used to compromise the security and privacy of a system. While many of these secret access methods are put in place by vendors and service providers, some backdoors create a remotely exploitable vulnerability that gives an attacker root system access. These backdoors -- which have existed for most of the modern computing era -- have become a hot security topic in the wake of an NSA scandal.

A backdoor is a secret way into a network, application or system that nobody else knows about -- at least, in theory.

In this tip, we'll look at the history of IT backdoors, the threats they pose to enterprises and what can be done to mitigate he risks.

http://searchsecurity.techtarget.com/tip/Locking-the-backdoor-Reducing-the-risk-of-unauthorized-system-access?asrc=EM_ERU_26748155&utm_medium=EM&utm_source=ERU&utm_campaign=20140224_ERU%20Transmission%20for%2002/24/2014%20(UserUniverse:%20681996)_myka-reports@techtarget.com&src=5215000