How Autonomous Identity Works

Autonomous Identity is an AI-based analytics engine that discovers, analyzes, and generates a complete profile of your company's entitlements.

Autonomous Identity looks at each entitlement and its relationship to the assigned user within the company. These relationships are modelled and assigned a single confidence score (from 0 to 100%) indicating the strength of correlation between the model and the assigned entitlement. The results are displayed on the UI console.

Figure 2: A simple conceptual diagram of Autonomous Identity

A simple diagram showing how Autonomous Identity works.

Let's Run a Simple Example

Let's run a simple example to see how Autonomous Identity models the entitlements and calculates confidence scores. Each company can decide the level and scope of the analysis. However, in most cases, the more data you analyze, the better the entitlement models.

Autonomous Identity processes the data in the following steps:

Data Ingestion

The process begins with data ingestion, where data is exported from application services, HR databases, and other sources and imported into Autonomous Identity using comma-separated values (.csv) formatted files. There are three general types of data files needed for analytics. Note that, in actual deployments, you set up seven data files consisting of HR data, entitlement data, application data and other mapping files to export to Autonomous Identity.

  • User Profile Data. Users profile data include those attributes that contain a subset of information from an HR system that is minimally required for entitlement analysis. Each user has a unique user ID and is represented in a single row within the file. Typically, the number of useful user profile attributes for successful modeling has been found to be between 7–15.

    The following table shows a simple example of user profile data:

    Table 1: User Attributes
    USER IDCITYDEPT
    alice.1San JoseFinance
    bob.2San JoseFinance
    chris.3San JoseFinance
    diane.4San JoseHR
    ellen.5San JoseHR
    fred.6AustinHR
    gary.7AustinHR
    harry.8AustinHR
    irene.9DublinIT
    janice.10DublinFinance
    karen.11San JoseFinance

  • Entitlement Data. In another file, you import a list of entitlement data and any other descriptive information. The file may include information, such as full entitlement name, application name, entitlement or role owner, or any other information that helps with the machine learning.

    The following table shows a simple example of entitlement data:

    Table 2: Entitlement Data
    EntitlementAPP_NAMEAPP_ID
    Payroll ReportADPadp-1
    ExpensesExpensifyexpensify-1

  • Access Data. The third type of data is a mapping file that connects the user to their assigned entitlement. The data can come from your IAM/IGA system. If a user has multiple entitlements, each row represents a single assigned mapping to each entitlement. Some examples could have user ID, entitlement name, flag if it is a high risk entitlement, another flag if the entitlement is assigned, and last usage.

    The following table shows a simple example of user-to-entitlement data:

    Table 3: User-to-Entitlement Mapping
    USR_KEYENTHIGH_RISKLAST_USAGE
    alice.1Payroll ReportHigh2020-06-06 17:11:07
    alice.1ExpensesHigh2020-06-06 17:11:07
    bob.2Payroll ReportHigh2020-06-06 17:11:07
    bob.2ExpensesHigh2020-06-06 17:11:07
    chris.3Payroll ReportHigh2020-06-06 17:11:07
    chris.3ExpensesHigh2020-06-06 17:11:07
    diane.4Payroll ReportHigh2020-06-06 17:11:07
    ellen.5Payroll ReportHigh2020-06-06 17:11:07
    fred.6Payroll ReportHigh2020-06-06 17:11:07
    gary.7ExpensesHigh2020-06-06 17:11:07
    harry.8Payroll ReportHigh2020-06-06 17:11:07
    irene.9ExpensesHigh2020-06-06 17:11:07
    janice.10Payroll ReportHigh2020-06-06 17:11:07
    karen.11ExpensesHigh2020-06-06 17:11:07

Training

Next, Autonomous Identity runs a two-stage training process to generate the association rules and confidence scores. An association rule is an IF-THEN rule that expresses patterns between random data variables in a large transaction set. For example, [San Jose, Finance] -> [Payroll Report] indicates that if a company's finance office is located in San Jose and a person works in that office and department, it is likely that they get access to the Payroll Report.

During stage one of the training, Autonomous Identity analyzes the user attribute data using machine learning algorithms to pattern-mine and create itemsets of rules. The frequency of occurrence is counted for each itemset. Only rules that appear three times or more are considered. Itemsets less than three are ignored.

Note

In a typical deployment, Autonomous Identity can create a million or more association rules for a company's dataset.

The following table shows the results of the initial training process:

Table 4: Itemsets of User Data
ItemsetFreq
[San Jose]6
[Finance]5
[HR]5
[San Jose, Finance]4
[Austin]3
[Austin, HR]3

During this training run, the analytics engine creates a unique row in a table for each user and their assigned entitlements. In the example below, alice.1, bob.2, and chris.3 have multiple rows, one for each assigned entitlement. Again, only frequency sets (freqUnion) of three or more are considered.

The following table shows the results of the second training process:

Table 5: Training Stage 2
USER IDCITYDEPTENT
alice.1San JoseFinancePayroll Report
alice.1San JoseFinanceExpenses
bob.2San JoseFinancePayroll Report
bob.2San JoseFinanceExpenses
chris.3San JoseFinancePayroll Report
chris.3San JoseFinanceExpenses
diane.4San JoseHRPayroll Report
ellen.5San JoseHRPayroll Report
fred.6AustinHRPayroll Report
gary.7AustinHRExpenses
harry.8AustinHRPayroll Report
irene.9DublinITExpenses
janice.10DublinFinancePayroll Report
karen.11San JoseFinanceExpenses

Autonomous Identity applies the association rules to the entitlement mappings and calculates the risk confidence scores by dividing the freqUnion by frequency numbers (FreqUnion/Freq). The confidence score indicates the scale from 0 to 100% to indicate the strength of each correlation. A confidence score of 100% indicates that the assigned entitlement is highly correlated to the user's job function. Only rules that appear three times or more are considered.

The following table shows the applied association rules:

Table 6: Applied Association Rules to Entitlements
RULEENTFREQFreqUnionConfidence
[San Jose]Payroll Report9556%
[San Jose]Expenses9444%
[Finance]Payroll Report4450%
[Finance]Expenses4450%
[HR]Payroll Report5480%
[San Jose,Finance]Payroll Report7343%
[San Jose,Finance]Expenses7457%

Next, Autonomous Identity must re-adjust the frequency numbers from the previous table as the occurrences of a rule are inflated due to multiple appearances of a user's entitlements (that is, one entitlement per row) as seen in Table 5. The re-adjustment provides a more accurate confidence score for each association rule.

The following are the results of the readjusted confidence scores:

Table 7: Applied Association Rules to Entitlements
RULEENTFREQ (Corrected)FreqUnionConfidence
[San Jose]Payroll Report6583%
[San Jose]Expenses6467%
[Finance]Payroll Report5480%
[Finance]Expenses5480%
[HR]Payroll Report5480%
[San Jose,Finance]Payroll Report4375%
[San Jose,Finance]Expenses44100%

As-is Predictions

After the training process has determined the association rules for each entitlement, the analytics engine runs through an as-is predictions process, where user accesses are mapped to each entitlement using the association rules.

In the example, the user alice.1 has the following mapped entitlements, which are called justifications for their entitlement accesses.

The following table shows the results of the as-is-predictions process:

Table 8: Initial As-is Predictions for a User
USER IDENTRULEConfidenceFreqUnion
alice.1Payroll Report[San Jose]83%5
alice.1Payroll Report[Finance]80%4
alice.1Payroll Report[San Jose, Finance]75%3
alice.1Expenses[San Jose]67%4
alice.1Expenses[Finance]80%4
alice.1Expenses[San Jose,Finance]100%4

The as-is predictions filter the justifications from the previous step using confidence score properties that are set in the configuration file. The maximum confidence score is set by the maxConf property. The minimum confidence score is set by the maxConf minus the pred_conf_window property, which is set to 5% in the configuration file by default. Thus, for this example, the maximum confidence and minimum confidence score filters for each entitlement is as follows:

The following table shows the result of the as-is-predictions:

Table 9: As-is Predictions Filter for a User
ENTmaxConfMin
Payroll Report83%78%
Expenses100%95%

Applying the filters in Table 9 to the mapped entitlements in Table 8, we get the following filtered assigned entitlements while discarding the rest. These filters are applied to all users in your analysis.

The following table shows the results for alice.1:

Table 10: Filtered As-is Predictions for a User
USER IDENTRULEConfidenceFreqUnion
alice.1Payroll Report[San Jose]83%5
alice.1Payroll Report[Finance]80%4
alice.1Expenses[San Jose, Finance]100%4

Finally, the highest freqUnion is used to find the users with a specific rule and entitlement access. All rules with the lower freqUnion values are filtered out to favor rules that apply to the largest number of employees within a company. This ensures that the most generalized rules are used for the analysis.

The following table shows the final as-is predictions for a user:

Table 11: Final As-is Predictions for a User
USER IDENTRULEConfidenceFreqUnion
alice.1Payroll Report[San Jose]83%5
alice.1Expenses[San Jose, Finance]100%4

Recommendations

The analytics process goes through a recommendations predictions process that takes the entitlement rules and identifies any users who should have access to the entitlement but do not. The analytics engine looks at each user's confidence score associated with the entitlement and if the confidence score exceeds a pre-configured hreshold value, the recommendation are made for the user.

The process begins by assigning the entitlements to all users and removing already existing accesses. Autonomous Identity assigns the rules and confidence scores for these new assignments.

The following table shows the recommendations assigned to users who do not have a particular entitlement:

Table 12: Recommendations
USER IDENTRULEConfidence
diane.4Expenses[San Jose]67%
ellen.5Expenses[San Jose]67%
fred.6Expenses[San Jose]67%
gary.7Payroll Report[HR]80%
harry.8Expenses[HR]20%
irene.9Payroll Reportno rule found0%
janice.10Expenses[Finance]80%
janice.11Payroll Report[San Jose]83%

The analytics engine determines the rules and confidence scores that meet a threshold property, conf_thresh, which is set to 80% in the configuration file by default.

The following example shows the final recommendations:

Table 13: Final Recommendations
USER IDENTRULEConfidence
gary.7Payroll Report[HR]80%
janice.10Expenses[Finance]80%
janice.11Payroll Report[San Jose]83%

The results will be uploaded to the Cassandra database as a recommended new entitlement and appears on the UI console on the Recommendations screen.

Output to the UI Console

The final step of the process is for Autonomous Identity to display the confidence scores graphically on the UI as a distribution from low, medium, to high scores. The console lets you immediately identify the low confidence scores that could pose a potential security risk as well as the high confidence scores that can be automatically approved or certified. Autonomous Identity displays the attributes that justified each confidence score as well as other data to help you manage your entitlements.

You can run the analytics weekly or monthly to ensure near realtime assessment of your entitlements. This ensures that some entitlements can immediately be flagged if it goes stale and is no longer necessary.

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