> For the complete documentation index, see [llms.txt](https://cortex-docs.paloaltonetworks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cortex-docs.paloaltonetworks.com/analytics-alerts/alerts-by-name/first-sso-access-from-asn-in-organization.md).
# First SSO access from ASN in organization
### Synopsis
| Field | Value |
| -------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Activation Period | 14 Days |
| Training Period | 30 Days |
| Test Period | N/A (single event) |
| Deduplication Period | 1 Day |
| Required Data | Requires one of the following data sources:
AzureAD OR Azure SignIn Log OR Idira OR Duo OR Google Workspace Authentication OR Okta OR OneLogin OR PingOne
|
| Detection Modules | Identity Analytics |
| ATT\&CK Tactic | Initial Access (TA0001) |
| ATT\&CK Technique | Valid Accounts: Domain Accounts (T1078.002) |
| Severity | Informational |
### Description
An SSO authentication was made with a new ASN.
### Attacker's Goals
Use an account that was possibly compromised to gain access to the network.
### Investigative actions
* Confirm that the activity is benign (e.g. the provider or location is allowed or a new user).
* Verify if the ASN is an approved ASN to authenticate from.
* Follow further actions done by the user.
### Variations
First SSO access from ASN in organization via a suspicious IP
**Synopsis**
| Field | Value |
| ----------------- | ------------------------------------------- |
| ATT\&CK Tactic | Initial Access (TA0001) |
| ATT\&CK Technique | Valid Accounts: Domain Accounts (T1078.002) |
| Severity | Low |
**Description**
An SSO authentication was made with a new ASN.
**Attacker's Goals**
Use an account that was possibly compromised to gain access to the network.
**Investigative actions**
* Confirm that the activity is benign (e.g. the provider or location is allowed or a new user).
* Verify if the ASN is an approved ASN to authenticate from.
* Follow further actions done by the user.
First successful SSO access from ASN in the organization
**Synopsis**
| Field | Value |
| ----------------- | ------------------------------------------- |
| ATT\&CK Tactic | Initial Access (TA0001) |
| ATT\&CK Technique | Valid Accounts: Domain Accounts (T1078.002) |
| Severity | Low |
**Description**
An SSO authentication was made with a new ASN.
**Attacker's Goals**
Use an account that was possibly compromised to gain access to the network.
**Investigative actions**
* Confirm that the activity is benign (e.g. the provider or location is allowed or a new user).
* Verify if the ASN is an approved ASN to authenticate from.
* Follow further actions done by the user.
Google Workspace - First SSO access from ASN in organization
**Synopsis**
| Field | Value |
| ----------------- | ------------------------------------------- |
| ATT\&CK Tactic | Initial Access (TA0001) |
| ATT\&CK Technique | Valid Accounts: Domain Accounts (T1078.002) |
| Severity | Informational |
**Description**
An SSO authentication was made with a new ASN.
**Attacker's Goals**
Use an account that was possibly compromised to gain access to the network.
**Investigative actions**
* Confirm that the activity is benign (e.g. the provider or location is allowed or a new user).
* Verify if the ASN is an approved ASN to authenticate from.
* Follow further actions done by the user.
---
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