Coverage of named threat actors and intrusion sets examines reported incidents, infrastructure, disruption, and defensive guidance.
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Background for this topic.
Coverage under this tag concerns a named threat actor or intrusion set: an individual, group, or organized operation assessed to be responsible for malicious cyber activity. Reports may describe incidents, malware, attack infrastructure, disruption efforts, or analyst assessments. Attribution is often provisional, so actor names and reported links should be treated as intelligence judgments rather than established identity, nationality, sponsorship, or motive.
For defenders, such reporting can help connect incidents and prioritize monitoring, but indicators and techniques may be reused or become obsolete. Validate reported infrastructure, hashes, and behaviors against local telemetry; use confirmed weaknesses to guide vulnerability remediation and access controls. If activity is suspected, preserve relevant logs and evidence, contain affected accounts or systems, and coordinate investigation without relying on an actor label alone.
A sophisticated threat actor using an MO similar to Scattered Spider is camouflaging itself with convincing impersonation techniques in targeted attacks.
Threat actors using the malware have infected systems within government, healthcare, and other critical infrastructure organizations since at least 2019.
More bad news for Ivanti customers: soon, even if you've patched, you still might not be safe from relentless attacks from high-level Chinese threat actors.
CISA and its counterparts in the UK and other countries this week offered new guidance on how to deal with the threat actor's recent shift to cloud attacks.
Trusted brands like The Economist are also among the 8,000 entities compromised by Operation SubdoMailing, which is at the heart of a larger operation of a single threat actor.