> 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/ssh-authentication-brute-force-attempts.md).
# SSH authentication brute force attempts
### Synopsis
| Field | Value |
| -------------------- | -------------------------- |
| Activation Period | 14 Days |
| Training Period | 30 Days |
| Test Period | 15 Minutes |
| Deduplication Period | 3 Hours |
| Required Data | XDR Agent |
| Detection Modules | Identity Analytics |
| ATT\&CK Tactic | Credential Access (TA0006) |
| ATT\&CK Technique | Brute Force (T1110) |
| Severity | Informational |
### Description
A user attempted to authenticate via SSH an excessive number of times in a short period. This may indicate a brute force attack.
### Attacker's Goals
Attackers attempt to log in to a remote host.
### Investigative actions
Verify any successful authentication by the user account referenced by the alert, as these can indicate the attacker managed to guess the credentials.
### Variations
Successful SSH Brute Force
**Synopsis**
| Field | Value |
| ----------------- | -------------------------- |
| ATT\&CK Tactic | Credential Access (TA0006) |
| ATT\&CK Technique | Brute Force (T1110) |
| Severity | Low |
**Description**
A user successfully authenticated via SSH after an excessive number of failures in a short period.
**Attacker's Goals**
Attackers attempt to log in to a remote host.
**Investigative actions**
Verify any successful authentication by the user account referenced by the alert, as these can indicate the attacker managed to guess the credentials.
Possible SSH Brute Force
**Synopsis**
| Field | Value |
| ----------------- | -------------------------- |
| ATT\&CK Tactic | Credential Access (TA0006) |
| ATT\&CK Technique | Brute Force (T1110) |
| Severity | Low |
**Description**
A user attempted to authenticate via SSH an excessive number of times in a short period. This may indicate a brute force attack.
**Attacker's Goals**
Attackers attempt to log in to a remote host.
**Investigative actions**
Verify any successful authentication by the user account referenced by the alert, as these can indicate the attacker managed to guess the credentials.
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