Gatekeeper — Cyber Threats, Attacks & Incidents

Threat entity extracted from intelligence sources

Frequency
3
occurrences
First Seen
May 11, 2026
Last Seen
June 25, 2026

Gatekeeper is a technology platform tracked across 2 threat clusters and 3 intelligence report mentions on ThreatCluster. First observed May 11, 2026; most recent activity June 25, 2026.

Related Threat Clusters

  • New Mistic Backdoor Linked to Ransomware Access Broker Activity

    A new backdoor known as Mistic has been identified in cyberattacks targeting various sectors since April 2026. It is associated with the initial access broker KongTuke, also known as Woodgnat, which sells access to…

    21 articles · Updated June 24, 2026
  • Apple Releases Critical Security Updates for Legacy Devices

    On May 11, 2026, Apple issued critical security updates for older iPhones, iPads, and Macs, addressing 84 vulnerabilities across various operating systems. The updates include fixes for serious flaws related to WebKit,…

    3 articles · Updated May 11, 2026

Recent Intelligence Reports

  • Stealthy Mistic Backdoor Targets Enterprise Networks via KongTuke Ransomware Access Broker — Rescana · June 25, 2026
  • Stealthy Mistic backdoor linked to ransomware access broker KongTuke — Bleepingcomputer · June 24, 2026
  • Update your older iPhone, iPad, or Mac now, to get new fixes for WebKit, Wi-Fi & kernel flaws — Appleinsider · May 11, 2026

Related Entities

Data Breach Denial-of-Service Malware Phishing Ransomware CrashFix FileFix Education Cwe-125 - Out-of-bounds Read Cwe-190 - Integer Overflow Or Wraparound CWE-200 - Exposure of Sensitive Information CWE-269 - Improper Privilege Management

CVSS v3.1 Breakdown