The Access Passback Problem

Passback *********

'********' ***** '******* ***********'. From *** ******* *****, two ****** *** ******* through ** ******-********** **** by ******* *** **** badge:

'********' ****** **** '****** A' ***** ***** ********** to '****** *' ** that ****** *** **** access. **** ******** ** similar ** ******** * door *** ******* * mail **** ** ** outside ****** ** ******* your ******** **** ******* else.

Security *************

** ****, ******** ***** that *** ****** ** not *********** ****** ** the *** ** *** designed, *** ** *****, it ***** **** * potential ****** ***** *****.

Less ***** **** **********, ***** * *******

'**********' ***** **** **** a ********** *** ****** a ****, ** ** left **** ** **** more **** *** ********** is ******* ** **** through. ** ******** ** 'Passback', '**********' ******** *** requirement ** **** *** credentials, ***** '********' ******* them.

************ * *********** **** in ***** ** ******** threats, ***** ******** ** generally **** ******* *** potentially ** *********. ******** is ******* *** **** with ********* ****** ** a ********** ** ***** used, **** *** *** that ********* *** *** user.

** *******, ******** ** easier ** ****** **** Tailgating, **** **** ********* or ******** ************* ************ preventing *** *** **** of *** ****.

*** **** ** *** more *********** ********** ******, see****** **********: ******* ******** Vulnerability.

Anti-Passback *********

** ******* *** ****, Access ******* ******* ***** feature **** ******** '****-********' controls:

• **** ****** (**** ****** 'Soft ****-********')
• ****** ******* & **** (also ****** '**** ****-********')

*******, ** ***** ********* are *** **** ** be ****, *********** ******** can ** **** **** with ***** ****:

• **********
• **********

Soft ****-********: **** ******

*** ******** *** **** basic ******* ***** * credential ****** ** **** at *** **** ****** twice ****** * ******* amount ** ****. **** feature ** ***** ******** with ********** ****** ******* but ******** ************* ** use **** ******* *** installed.

****** ********* * **** from ******** ****** ** the **** ****** *** a ****** ** * to * ******* *********** the *********** ** ********** using * **********. ** some *****, *** ***** may *** **** ** fully ******** **** ***, but *** ***** ** flagged ** * ****** for ********** ** *********** further.

*******, **** **** ** control *** ** ************ if ***** ************ **** something ***** ******* * card, ****** ********** ** a ************, ** **** some ***** ********** ****** for ******* **-************* ******* an *******.

Hard ****-********: ****** ******* *** ****

*** **** ****** ** more **********, *** **** more ****** ** *********.

***** '****** ******* *** flow' ******* ******** ********** reads ** ****** * logical ******* ****** * system. *** *******, * credential **** ** **** at ** '***' ****** before ** *** ** used *** ** '**' function. ********, * ********** cannot ** **** ** enter '******** *' ** 'Building *' *** *** first **** ******.

**** ****-******** ****** ** the **** ********* ******* have *** *********** *** problem, *** ** ******** the **** **** ** 'OUT' ******* **** **** be ********* *** ****** an ******** ** ****** all ***** ********** ****** a ********, **** ***** that *** ************ ****.

Using ********** ********* ****

******** *** ** ********* by ************* ***** ***** on ********** (***** ***** body) ******* ** '*********' credentials.

*******, *** *** ********, users, ** ********** *** able ** *** **********, and **** ********* ******* may ** ******.

Turnstiles & ********* ***** **********

* ******, *** ********* costly, ****** ** ********** Passback ** ***** **********, revolving *****, ** ******** to ********** ******* **** than * ****** ****** entering ** *** ****.

***** ********** ** ***** should ** ******** ** a *** **** **** allows *** ***** ** a ****, *** ** gaps ** ******** ****** exist ** ****** ******* credentials *** ** ******.

*** ****, ********* ******* ********** *****.

Other *********

************ ********** ******** ********* involves **** **** **** software. *** *******, ** our********* ********* ** ************ and ****************, **** **** ** solution ***** **** *****,

**** **** **% ** those ********* ********* ***** more **** *** ******** method *********:

• *******:******* ****** ******** ******** using ************ ******* ** record ****** ******.
• *******:*** **** ****** '****' measure ** ******* *** risk *** *** *** of ***** ** ****** people **** ******** *** system ******* ****** ** undermines ******** ********.

Ignoring **** ******

*******, **** ****** ** ignore *** *****. ***** 15% ** ********* **** they ****** ** ******* because ********** ** ** too ******, ** ** is *** ****** ** a **** ** ******* countermeasures.

Dangerous ** ******

******** ** ****** *** threat ******* ********* ** gain ***** ** ***** they *** *** ** verified ** *****. **** Passback ******* ** ******** risk, ** ********** *** sizable ********** ** ****** control.