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.
Ransomware threat actors tracked as Velvet Tempest are using the ClickFix technique and legitimate Windows utilities to deploy the DonutLoader malware and the CastleRAT backdoor. [...]
Microsoft says threat actors are increasingly using artificial intelligence in their operations to accelerate attacks, scale malicious activity, and lower technical barriers across all aspects of a cyberattack. [...]
The Pakistan-aligned threat actor known as Transparent Tribe has become the latest hacking group to embrace artificial intelligence (AI)-powered coding tools to strike targets with various implants
Threat actors are employing a new variation of the ClickFix social engineering technique called InstallFix to convince users into running malicious commands under the pretext of installing legitimate command line interface (CLI) tools. [...]
A China-linked advanced persistent threat actor tracked as UAT-9244 has been targeting telecommunication service providers in South America since 2024, compromising Windows, Linux, and network-edge devices. [...]
Compromise Affects Healthcare Clients of Co.'s Revenue Cycle Management ServicesBilling services vendor Trizetto Provider Solutions is notifying 3.4 million individuals of a hacking incident discovered in October 2025 that investigators have now determined started nearly a year earlier, when threat actors accessed the company's healthcare clients' insurance related data.
The phishing-as-a-service platform was popular among cyber threat actors because of its ability to bypass multifactor authentication defenses.
A suspected Iran-nexus threat actor has been attributed to a campaign targeting government officials in Iraq by impersonating the country's Ministry of Foreign Affairs to deliver a set of never-before-seen malware
Ox Security warns that Mail2Shell could enable threat actors to hijack FreeScout systems without user interaction
Attack infrastructure attributed to 'several Iran-nexus threat actors' Multiple Iranian hacking crews have been targeting internet-connected surveillance cameras across Israel and other Middle Eastern countries since the war started on February 28, according to Check Point security researchers. …
A previously undocumented set of 23 iOS exploits named "Coruna" has been deployed by multiple threat actors in targeted espionage campaigns and financially motivated attacks. [...]
Customers of restaurants using the HungerRush point-of-sale (POS) platform say they received emails from a threat actor attempting to extort the company, warning that restaurant and customer data could be exposed if HungerRush fails to respond. [...]
Juniper Tells Customers to Tune Their FirewallA critical vulnerability in Juniper Networks' primary operating system could give threat actors root level privileges to execute code on Juniper’s PTX Series routers. Successful exploitation would give attackers full command and control over devices without the need for authentication.
India-nexus cyber threat actors are growing more active and sophisticated, using custom tools coded in Rust and cloud-based command and control.
Like many other features and systems in modern cars, tire pressure sensors leak sensitive data that can be abused by threat actors.
Threat hunters have called attention to a new campaign as part of which bad actors masqueraded as fake IT support to deliver the Havoc command-and-control (C2) framework as a precursor to data exfiltration or ransomware attack
The threat actor behind the recently disclosed artificial intelligence (AI)-assisted campaign targeting Fortinet FortiGate appliances leveraged an open-source, AI-native security testing platform called CyberStrikeAI to execute the attacks
Zscaler ThreatLabz assessed with medium to high confidence that an Iranian adversary targeted Iraq’s Ministry of Foreign Affairs in a new cyber-attack
Researchers warn that a newly identified open-source AI security testing platform called CyberStrikeAI was used by the same threat actor behind a recent campaign that breached hundreds of Fortinet FortiGate firewalls. [...]
A recently disclosed security flaw patched by Microsoft may have been exploited by the Russia-linked state-sponsored threat actor known as APT28, according to new findings from Akamai