Practical_assignment-531
Colin Horn
Week4Slides2.pptxAccess Control, Authentication, and Public Key Infrastructure
Lesson 4
Human Nature and Organizational Behavior
Access Control for Information Systems
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IS404 Access Control, Authentication and PKI (PKI)
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09/23/10
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1
Dealing with Human Nature
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Access Control, Authentication, and PKI
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The unintentional threat
Hackers and motivation
Social engineering
Pre-Employment Checks
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Access Control, Authentication, and PKI
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3
What Information Can Be Considered
What Information Cannot be Considered
Applicant’s Rights
Consequences of a Bad Hiring Decision
Ongoing Observation of Personnel
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Access Control, Authentication, and PKI
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09/23/10
4
Identify Potentially Disgruntled Employees
Proper Ways to Revoke Access upon Employee Termination
Organizational Structure and Access Control Strategy
Access control model based on organizational structure is designed to prevent social engineering attacks
Employees are given access based on tasks they must complete as part of their job
Access rules are based on balance of confidentiality and necessity
Organizational structure model is similar to the role-based access control (RBAC) model
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Access Control, Authentication, and PKI
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09/23/10
5
Job Rotation and Position Sensitivity
Job rotation minimizes effects of dishonesty
Often used for sensitive positions, especially those that are directly responsible for crucial information and assets
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Access Control, Authentication, and PKI
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Requirement for Periodic Vacation
Periodic vacations act as a security measure
Requiring person to take time off from work provides time for evidence of dishonesty to surface
Can also reduce the success of social engineers
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Access Control, Authentication, and PKI
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Separation of Duties
Ensures that a single person does not handle all crucial decisions and activities, especially those involving a high level of trust
Goal is to avoid the temptation to commit fraud or other illegal activities
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Access Control, Authentication, and PKI
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Two-person control
Collusion
Monitoring and oversight
Responsibilities of Access Owners
Disclosing to users any relevant legal, regulatory, or ethical issues surrounding the use or disclosure of the information
Implementing a data classification system and rating the data according to its sensitivity, confidentiality, inherent value, and other factors
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Access Control, Authentication, and PKI
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09/23/10
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Responsibilities of Access Owners (Cont.)
Maintaining a list of authorized users
Implementing procedures to safeguard information from unauthorized use, disclosure, alteration, or accidental or intentional destruction
Developing a policy governing data retention and disposition
• Providing users with adequate training in the use and protection of the information
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Access Control, Authentication, and PKI
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10
Training Employees
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Access Control, Authentication, and PKI
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Be ongoing
Include multiple formats
Be interactive
Include multiple points of contact
Security Awareness Training Facts
Information technology (IT) security surveys conducted by well-known accounting firms found the following:
Many organizations have some awareness training.
Most awareness programs omitted important elements.
Less than 25% of organizations had no way to track awareness program effectiveness.
Source: http://www.lumension.com/Resources/Resource-Center/Protect-Vital-Information-Minimize-Insider-Risks.aspx
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Access Control, Authentication, and PKI
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09/23/10
12
Ethics
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Access Control, Authentication, and PKI
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What is right and what is wrong
Enforcing policies
Human resources involvement
Defining appropriate policies and procedures governing employee behavior
Educating employees about the policies and procedures relevant to them
Discovering and addressing behavioral shortcomings
Encouraging create risk-taking
Best Practices for Managing Human Nature
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Access Control, Authentication, and PKI
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14
User Domain Access Control Management
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15
The Three States of Data
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Data at Rest (DAR)
Stored on some device
Archived records
Data in Motion (DIM)
Sending an e-mail
Retrieving a Web page
Data in Process
Creating a new document
Processing a payment
Use encryption to protect stored data:
Elements in databases
Files on network and shared drives
Files on portable or movable drives, Universal serial bus (USB), and flash drives
Files and shared drives accessible from the Internet
Personal computers (PCs), laptop hard drives, and full disk encryption
Protecting DAR
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Access Control, Authentication, and PKI
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DIM
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Difficult to protect since it is being operated on by the central processing unit (CPU)
Protecting DIP
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Access Control, Authentication, and PKI
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Object: An item or a distinct group of information in a data storage system
Group information as an object, set controls at the object level
Allows you to manage groups of related data
Helps with DAR and DIM security
Object-Level Security
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A security identifier (SID) that identifies what the ACE applies to—the specific user, group or system
An access mask that lists the specific rights granted or denied
Flags to indicate the type of ACE and whether child objects can inherit the rights from the object that the ACE is attached to
Access Control List Properties
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Access Control, Authentication, and PKI
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Access Control List Types
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access-denied
access-allowed
system-audit
DACL and SACL
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Access Control, Authentication, and PKI
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Discretionary Access Control List (DACL)
Controls access to an object
System Access Control List (SACL)
Handles the information assurance aspect of access controls
Best Practices for Access Controls for Information Systems
Create a baseline for access
Segregate users’ rights by role
Automate user creation
Tie access controls to the environment
Have a clear standard for decommissioning data storage devices
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Access Control, Authentication, and PKI
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Week 4 Homework Assignments
Read Chapters 7 and 8
Complete Labs 7 and 8 and Quizzes
Midterm Exam
50 questions: multiple choice and true/false
60 minutes
ONE attempt
Due Sunday at 11:59 PM EST
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Access Control, Authentication, and PKI
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