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Huntress Launches Brute Force Sentry for Detecting Successful Logins After Password Guessing

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Summary

Huntress says Brute Force Sentry correlates failed logins with subsequent successes across supported platforms. In a review of 30 confirmed RDWeb/RDG compromises, the company says its signal would have reached the SOC earlier in 20 cases.

Key points

  • Brute Force Sentry is available to all Huntress Managed SIEM customers and activates when required telemetry is flowing.
  • The detection covers Windows authentication and RD Gateway logs, Linux sshd, and macOS, and distinguishes brute force, distributed brute force, password spraying, credential stuffing, and username enumeration.
  • Huntress says it normalizes authentication records across providers to connect failed attempts with a subsequent successful login.
  • In a Huntress-described June 2026 compromise, an attacker made roughly 1,700 failed login attempts against eight accounts in 72 seconds before gaining access to an RD Gateway.
  • Huntress says that, among 30 confirmed RDWeb/RDG compromises reviewed during the first four weeks of testing, the signal would have reached the SOC up to an hour earlier in 20 cases.
  • The portal displays targeted accounts and sources, exposed login surfaces, and successful logins following failed attempts; compromise notifications are enabled, with notifications for every attempt optional.

Article Details

Event Type
Huntress launched Brute Force Sentry for all Managed SIEM customers.
Impact
Brute Force Sentry correlates failed and successful authentication events across supported login surfaces to identify brute-force compromises and provide investigation evidence. In a review of 30 confirmed RDWeb/RD Gateway compromises during the first four weeks of testing, Huntress reported that the detection signal would have reached its SOC up to an hour earlier in 20 cases.

Vendors

HuntressToday, Huntress Managed SIEM's Brute Force Sentry is available to all Managed SIEM customers. It turns the brute force attacks our SOC sees in the field into detections that fire earlier, with the evidence and hardening

Products

Brute Force SentryHomeBlogIntroducing Brute Force Sentry: See Who's Knocking on Your Exposed Logins, and Know When One Gets InManaged SIEMToday, Huntress Managed SIEM's Brute Force Sentry is available to all Managed SIEM customers. It turns the brute force attacks our SOC sees in the field into detections that fire earlier, with the evidence and hardening

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