Coverage of named threat actors and intrusion sets examines reported incidents, infrastructure, disruption, and defensive guidance.
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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 PoisonSeed phishing campaign is bypassing FIDO2 security key protections by abusing the cross-device sign-in feature in WebAuthn to trick users into approving login authentication requests from fake company portals. [...]
PoisonSeed Threat Actor Uses Cross-Device Login Feature and QR Code to Trick UsersExpel researchers have found a novel adversary-in-the-middle phishing technique used by PoisonSeed, a cybercrime group previously tied to large-scale cryptocurrency thefts, to sidestep one of the most secure forms of multifactor authentication - FIDO2 physical keys.
CrushFTP is warning that threat actors are actively exploiting a zero-day vulnerability tracked as CVE-2025-54309, which allows attackers to gain administrative access via the web interface on vulnerable servers. [...]
CrushFTP is warning that threat actors are actively exploiting a zero-day vulnerability tracked as CVE-2025-54309, which allows attackers to gain administrative access via the web interface on vulnerable servers. [...]
Hackers Using Amadey Bot to Drops Payloads From Fake GitHub AccountsThreat actors are using public GitHub repositories to host and distribute malware through the Amadey botnet in an ongoing campaign linked to a broader malware-as-a-service operation, Cisco Talos said in a report published Thursday.
The UK National Cyber Security Centre (NCSC) has formally attributed 'Authentic Antics' espionage malware attacks to APT28 (Fancy Bear), threat actor already linked to Russia's military intelligence service (GRU). [...]
Cybersecurity researchers have disclosed details of a new malware called MDifyLoader that has been observed in conjunction with cyber attacks exploiting security flaws in Ivanti Connect Secure (ICS) appliances
With IT outages and disruptions escalating, IT teams are shifting their focus beyond simply backing up data to maintaining operations during an incident. One of the key drivers behind this shift is the growing threat of ransomware, which continues to evolve in both frequency and complexity. Ransomware-as-a-Service (RaaS) platforms have made it possible for even inexperienced threat actors with
Chinese threat actors have turned to cyberattacks as a way to undermine and destabilize Taiwan's most important industrial sector.
3 State-Sponsored Groups Spear-Phish Semiconductor EcosystemChinese state-aligned hackers have ramped up espionage efforts against Taiwan's semiconductor ecosystem through spear-phishing campaigns. Three distinct threat actors targeted chipmakers, packaging and testing firms, equipment suppliers and financial analysts.
Threat actors are leveraging public GitHub repositories to host malicious payloads and distribute them via Amadey as part of a campaign observed in April 2025
The modern-day threat landscape requires enterprise security teams to think and act beyond traditional cybersecurity measures that are purely passive and reactive, and in most cases, ineffective against emerging threats and sophisticated threat actors. Prioritizing cybersecurity means implementing more proactive, adaptive, and actionable measures that can work together to effectively address the
The Taiwanese semiconductor industry has become the target of spear-phishing campaigns undertaken by three Chinese state-sponsored threat actors
67 Malicious Packages, XORIndex Loader Target JavaScript Code-Sharing PlatformNorth Korean threat actors escalated their software supply chain attacks by uploading 67 new malicious packages to the npm Registry as part of the ongoing Contagious Interview campaign. The malware targets open-source JavaScript developers with malware loaders.
A threat actor with likely links to the Abyss ransomware group is leveraging an apparent zero-day vulnerability to deploy the "Overstep" backdoor on fully up-to-date appliances.
A threat actor has been deploying a previously unseen malware called OVERSTEP that modifies the boot process of fully-patched but no longer supported SonicWall Secure Mobile Access appliances. [...]
North Korean threat actors planted 67 malicious packages in the Node Package Manager (npm) online repository to deliver a new malware loader called XORIndex to developer systems. [...]
Cybersecurity researchers have shed light on a new ransomware-as-a-service (RaaS) operation called GLOBAL GROUP that has targeted a wide range of sectors in Australia, Brazil, Europe, and the United States since its emergence in early June 2025
A new phishing campaign uses SVG files for JavaScript redirects, bypassing traditional detection methods
Governmental organizations in Southeast Asia are the target of a new campaign that aims to collect sensitive information by means of a previously undocumented Windows backdoor dubbed HazyBeacon