Access Control
Access Control, Authentication, and Public Key Infrastructure
Chapter 3
Business Drivers for Access Controls
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Access Control, Authentication, and PKI
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1
Data or Information Assets
An intangible asset with no form or substance:
Paper records
Electronic media
Intellectual property stored in people’s heads
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Access Control, Authentication, and PKI
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2
Importance of Policy and Senior Management Role
Organizations value intellectual property
Must control access to information to ensure survival
Protecting confidential information involves:
Technical controls
Clear policies and sound business processes that implement those policies
Access control policies are effective only with support of senior executives
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Access Control, Authentication, and PKI
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3
Classification Schemes
Classification scheme is a method of organizing sensitive information into access levels
Only a person with the approved level of access is allowed to view information
This access is called clearance
Every organization has its own method of determining clearance levels
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Access Control, Authentication, and PKI
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4
National Security Classification
Unclassified
Confidential
Secret
Top Secret
Corporations
Public
Internal
Sensitive
Highly sensitive
Classification Schemes (Cont.)
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Access Control, Authentication, and PKI
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5
In a hospital, for example, a data classification scheme would identify the sensitivity of every piece of data in the hospital, from the cafeteria menu to patient medical records.
Classified as Public
For use by defined category within job role
Sensitivity-Based Data Classification
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Access Control, Authentication, and PKI
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6
Need to know
Requester should not receive access just because of his or her clearance, position, or rank
Requester must establish a valid need to see information
Access should be granted only if information is vital for requester’s official duties
Least privilege
A computer user or program should have only the access needed to carry out its job
Need to Know and Least Privilege
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7
Declassification
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8
Automatic
Systematic
Mandatory declassification review
Freedom of Information Act request
Business Drivers for Access Control
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Access Control, Authentication, and PKI
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9
Cost-benefit analysis
Risk assessment
Business facilitation
Cost containment
Operational efficiency
IT risk management
Electronic Records
United Nations Electronic Data Classification
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10
The Life Cycle of an Order
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09/23/10
(c) ITT Educational Services, Inc.
11
Defense:
Risk: Insecure Direct Object Reference
Use an automated tool for real-time attack.
Monitor parameter manipulation–hidden/static.
Establish baseline configuration.
Risk: Cross-Site Request Forgery
Use an automated tool for real-time attack.
Alert/respond to parameter manipulation.
Use known attack signatures.
Establish baseline/monitor resource changes.
Risk: Security Misconfiguration
Use an automated tool for real-time attack.
Inspect outbound responses.
Investigate application failures.
09/23/10
(c) ITT Educational Services, Inc.
11
Controlling Access and Protecting Value
Importance of internal access controls
Importance of external access controls
Implementation of access controls with respect to contractors, vendors, and third parties
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12
Refers to security of records and information not in electronic systems and applications
Access is regularly linked to functional responsibilities and not to position or grade
Security or background investigation required
Physical Security of Sensitive Information
Can/Should this information be shared?
Secure storage and limited access
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Access Control, Authentication, and PKI
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13
Data Destruction
Use appropriate secure destruction method for the media and format.
Do not put in trash bins.
Data awaiting destruction should be placed in lockable containers.
Strictly confidential and confidential data is destroyed in accordance with specific guidelines.
.
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Data destroyed in accordance with administrative or operations retention schedule
14
Data Destruction (Continued)
.
Shredder/Degausser
Light office shredder/disintegrator
Electronic media
Portable devices
Portable devices
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Data destroyed in accordance with administrative or operations retention schedule
15
Manage the Identity and Access Provisioning Life Cycle
16
Module Topic
Access Control and Identity Management Life Cycle
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Access Control and Identity Management Life Cycle
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Provisioning
Review
Revocation
Provisioning
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Provisioning entails determining the organizational requirements for access to information, and applies the appropriate access rights
Review
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Access rights and usage must be monitored on a basis commensurate with risk
Reviewing access can take the form of automated checks, manual audits, and several other methods
Revocation
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21
Through access review, revocation typically is invoked when a user has aggregated unnecessary access, or access is not commensurate with the role of the user
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Access Control was first posted on August 29, 2019 at 1:22 pm.
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