Threat Actor
Sulphur Kestrel
- First Reported
- Oct 20, 2026
- Latest Reported
- Oct 20, 2026
Reported Context (1)
- KnowBe4 lists its origin as Indonesia/Singapore and describes Microsoft 365 credential harvesting, reverse-proxy MFA bypass, calendar-invite lures, and use of Greatness or NakedPages. KnowBe4 Report Tracks Rising Teams, Calendar and Reverse-Proxy Phishing
People (6)
Threat Actors (4)
MITRE ATT&CK (10)
Vendors (2)
Products (6)
Tools (9)
Industries (5)
Countries (3)
Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.