Customer story

Satellite communicationsGlobalAnonymized

Catching a nation-state’s brute-force campaign against a global satellite operator

A Chinese-directed cluster brute-forced internal support portals for a satellite operator and took over accounts. Unit6 surfaced the compromise and rebuilt authentication before operations were touched.

MITRE T1110MITRE T1078MITRE T1086

The situation

A global satellite communications operator exposed internal support and management portals with weak, inconsistent MFA. Unit6 observed a Chinese-directed threat cluster systematically brute-forcing and successfully compromising multiple accounts.

What Unit6 detected

  • Focused brute-force activity against internal support portals.
  • Confirmed valid username/password combinations for multiple internal user accounts.
  • Evidence of successful interactive logins shortly after brute-force bursts.

Why it mattered

  • Reconnaissance on satellite configurations, customers, and routing.
  • Interference with internal workflows supporting satellite operations.
  • Lateral movement into more sensitive environments.
  • Espionage or timed disruption of critical communications.

What Unit6 did

Contained active compromise

  • Identified and reset all compromised internal accounts.
  • Invalidated active sessions and tightened access rights for support users.

Raised the bar on authentication

  • Enforced MFA on all internal support portals and high-risk internal applications.
  • Introduced rate limiting and account lockout policies on exposed login panels.

Enhanced monitoring and hygiene

  • Deployed detections for repeated failed logins and unusual login locations.
  • Ran focused credential hygiene campaigns for internal staff.

Outcome

  • Multiple compromised accounts were neutralized before deeper pivot.
  • Critical portals moved from password-only to hardened, monitored access.
  • Executives saw how adversary-centric visibility reduced operational risk for space infrastructure.

Unit6 edge

  • Tracing nation-state brute-force behavior from attacker infrastructure into specific internal portals and accounts.
  • Campaign-level visibility that turned brute-force noise into confirmed compromise.
  • Rapid, practical guidance implemented by operations teams without re-architecting systems.

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