> 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-vpn-access-from-asn-for-user.md).
# First VPN access from ASN for user
### 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:
Palo Alto Networks Global Protect OR Third-Party VPNs
|
| Detection Modules | Identity Analytics |
| ATT\&CK Tactic | Initial Access (TA0001) |
| ATT\&CK Technique | Valid Accounts: Domain Accounts (T1078.002) |
| Severity | Informational |
### Description
A user logged in to a VPN 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 user has switched locations and providers).
* Verify if the ASN is an approved ASN to authenticate from.
* Follow further actions done by the user.
### Variations
Unusual VPN access from ASN
**Synopsis**
| Field | Value |
| ----------------- | ------------------------------------------- |
| ATT\&CK Tactic | Initial Access (TA0001) |
| ATT\&CK Technique | Valid Accounts: Domain Accounts (T1078.002) |
| Severity | Low |
**Description**
An unusual VPN login was made by a user.
**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 user has switched locations and providers).
* Verify if the ASN is an approved ASN to authenticate from.
* Follow further actions done by the user.
---
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