Vishing
Hedge fund cyberattacks tied to BlackFile-linked UNC6671 extortion group
A recent wave of cyberattacks targeting hedge funds, private-equity firms, and other financial organizations has been linked to UNC6671, an extortion group reportedly associated with the BlackFile threat actors. The attribution comes after Reuters and Bloomberg reported that Point72 Asset Management, Millennium Management, Two Sigma Investments, Citadel, and several private-equity firms were targeted in recent attacks that relied on voice […]
Microsoft Teams vishing attacks lead to Chaos ransomware attacks
Threat actors are impersonating IT support staff in Microsoft Teams calls to gain remote access to corporate devices and deploy Chaos ransomware in attacks targeting North American organizations. Sophos tracks the campaign as STAC4749 and says it targeted dozens of organizations between February and June 2026. At least three of these intrusions led to the […]
New Helix vishing group emerges in SharePoint data theft attacks
A new data-extortion group called Helix is using identity-focused tactics such as voice phishing (vishing), device code phishing, and multi-factor authentication (MFA) abuse to steal data from SharePoint environments. Initial contact is made through vishing. In some cases, the threat actor called employees while impersonating their manager, using either the manager’s name or caller ID […]
Fake IT support calls on Microsoft Teams push EtherRAT malware
Threat actors are abusing Microsoft Teams voice calls by impersonating corporate IT support staff to trick employees into installing the EtherRAT malware, giving attackers initial access to corporate networks. The campaign, reported by Palo Alto Networks’ Unit 42, combines phishing emails, Microsoft Teams voice calls, legitimate remote management tools, and a Node.js-based malware loader to […]
New BlackFile extortion group linked to surge of vishing attacks
A new financially motivated hacking group tracked as BlackFile has been linked to a wave of data theft and extortion attacks against retail and hospitality organizations since February 2026. The group, also tracked as CL-CRI-1116, UNC6671, and Cordial Spider, is impersonating corporate IT helpdesk staff to steal employee credentials and demand seven-figure ransoms, according to information shared […]
New ATHR vishing platform uses AI voice agents for automated attacks
A new cybercrime platform called ATHR can harvest credentials via fully automated voice phishing attacks that use both human operators and AI agents for the social engineering phase. The malicious operation is advertised on underground forums for $4,000 and a 10% comission from profits, and can steal login data for multiple services, including Google, Microsoft, […]
Traffic violation scams switch to QR codes in new phishing texts
Scammers are sending fake “Notice of Default” traffic violation text messages impersonating state courts across the U.S., pressuring recipients to scan a QR code that leads to a phishing site demanding a $6.99 payment while stealing personal and financial information. This is a new variation of the widely sent toll violation and unpaid parking ticket scams that […]
Ad tech firm Optimizely confirms data breach after vishing attack
New York-based ad tech company Optimizely has notified an undisclosed number of customers of a data breach after threat actors compromised some of its systems in a voice phishing attack. Optimizely has nearly 1,500 employees across 21 global offices, and its customer list includes over 10,000 businesses, including high-profile brands like H&M, PayPal, Zoom, Toyota, […]
ShinyHunters claim hacks of Okta, Microsoft SSO accounts for data theft
The ShinyHunters extortion gang claims it is behind a wave of ongoing voice phishing attacks targeting single sign-on (SSO) accounts at Okta, Microsoft, and Google, enabling threat actors to breach corporate SaaS platforms and steal company data for extortion. In these attacks, threat actors impersonate IT support and call employees, tricking them into entering their […]
Fashion giant Chanel hit in wave of Salesforce data theft attacks
French fashion giant Chanel is the latest company to suffer a data breach in an ongoing wave of Salesforce data theft attacks. Chanel says the breach was first detected on July 25th after threat actors gained access to a Chanel database hosted at a third-party service provider, as first reported by WWD. The breach only impacted customers […]