Fake IT Calls Target Executives in Microsoft 365 Data Theft and Extortion Attacks

Threat hunters have disclosed details of a widespread data theft and extortion threat cluster that's targeting Microsoft 365 and other software-as-a-service SaaS offerings through information technology IT help desk vishing, adversary-in-the-middle AitM token theft, and residential-proxy sign-ins...

McKesson confirms cyber incident after ShinyHunters claims patient-data theft

Healthcare and pharmaceutical-distribution giant McKesson has disclosed a cybersecurity incident involving unauthorized access to third-party applications and the theft of data. McKesson Corporation is an American healthcare company that distributes pharmaceuticals and provides medical supplies,...

An Analysis of the Impact of Psychological Factors and Techniques across Different Types of Social Engineering

Phishing is a well-known social engineering SE type used to trick individuals into revealing personal information or performing desired actions, like downloading and installing malware. Other SE types, like vishing and smishing, have emerged and are increasingly being used. As SE continues to...

UNC6671 Vishing Attacks Target Personal Phones to Steal SaaS Data

A recent wave of cyber attacks targeting financial services, private equity, and professional services has been attributed to a data extortion group known as UNC6671. "UNC6671 continues to rely on voice phishing vishing to target enterprise employees, posing as IT help desk staff facilitating...

Email threat landscape: Q2 2026 trends and insights

In this article 1. Tycoon2FA Q2 disruption impact 2. QR code phishing attacks 3. CAPTCHA-gated phishing tactics 4. Malicious payloads 5. Business email compromise 6. Microsoft Teams threats 7. Notable phishing campaigns 8. Mitigation and protection guidance 9. Indicators of compromise IOCs The...

Microsoft Maps Three Salesforce Attack Paths Tied to a Year of ShinyHunters Activity

Attackers whose methods line up with the data-extortion group ShinyHunters have spent the past year walking into corporate Salesforce environments without exploiting a single flaw in the platform. The way in has been the trust the organization had already extended, usually through the OAuth...

Defending SaaS-based applications against ShinyHunters OAuth abuse

In this article 1. Attack chain overview 2. Improving visibility into Salesforce OAuth abuse 3. Mitigation and protection guidance 4. Learn more In a series of campaigns observed between mid-2025 and mid-2026, Microsoft identified threat actor activity with overlapping tradecraft commonly...

Defending SaaS-based applications against ShinyHunters OAuth abuse

In this article 1. Attack chain overview 2. Improving visibility into Salesforce OAuth abuse 3. Mitigation and protection guidance 4. Learn more In a series of campaigns observed between mid-2025 and mid-2026, Microsoft identified threat actor activity with overlapping tradecraft commonly...

Hackers Use Fake Microsoft Entra Passkey Enrollment to Gain Microsoft 365 Access

A threat actor has been targeting organizations spanning multiple sectors with voice-based fake security requests that prompt Microsoft 365 users to enroll a new Entra passkey with an aim to carry out data extortion attacks. The threat actor, tracked by Okta under the moniker O-UNC-066 , has...

SCMBANKER Malware Uses ClickFix Lures to Target Mexican Banking Users

A new banking fraudulent operation is targeting customers of Mexican banks, fintech, payment processors, and cryptocurrency exchanges using ClickFix lures. The activity cluster, tracked by Elastic Security Labs under the moniker REF6045 , involves infecting victims through fake CAPTCHA verificati...

Silent Ransom Group Uses Fast Flux Botnet to Hide Law Firm Leak Sites

Cybersecurity firm Resecurity reports Silent Ransom Group is using a fast flux botnet to hide data leak sites while targeting law firms with theft and vishing...

UNC3753 Used Vishing and Physical Intrusions in U.S. Data Theft Extortion Campaign

Cybersecurity researchers have disclosed details of a financially motivated data theft extortion campaign that has targeted dozens of organizations across professional, legal, and financial services in the U.S. between January and May 2026. The activity has been attributed by Google Mandiant and...

MFA Prompt Bombing: Why Your Second Factor Isn't Saving You

Multi-factor authentication MFA was supposed to close a critical gap in identity security. It meant that, even if an attacker possessed the account credentials, they couldn't log in without the second factor. While that logic was sound, attackers have now figured out that they don't need to steal...

Romanian Man Faces Up to 30 Years in US Prison Over Vishing Scams

Romanian national Gavril Sandu faces up to 30 years in a US prison after extradition over a VOIP vishing and fake debit card fraud scheme...

Cybercrime Groups Using Vishing and SSO Abuse in Rapid SaaS Extortion Attacks

Cybersecurity researchers are warning of two cybercrime groups that are carrying out "rapid, high-impact attacks" operating almost within the confines of SaaS environments, while leaving minimal traces of their actions. The clusters, Cordial Spider aka BlackFile, CL-CRI-1116, O-UNC-045, and UNC66...

Help on the line: How a Microsoft Teams support call led to compromise

In our eighth Cyberattack Series report, Microsoft Incident Response—the Detection and Response Team DART—investigates a recent identity-first, human-operated intrusion that relied less on exploiting software vulnerabilities and more on deception and legitimate tools. After a customer reached out...

Help on the line: How a Microsoft Teams support call led to compromise

In our eighth Cyberattack Series report, Microsoft Incident Response—the Detection and Response Team DART—investigates a recent identity-first, human-operated intrusion that relied less on exploiting software vulnerabilities and more on deception and legitimate tools. After a customer reached out...

SLH Offers $500–$1,000 Per Call to Recruit Women for IT Help Desk Vishing Attacks

The notorious cybercrime collective known as Scattered LAPSUS$ Hunters SLH has been observed offering financial incentives to recruit women to pull off social engineering attacks. The idea is to hire them for voice phishing campaigns targeting IT help desks, Dataminr said in a new threat brief. T...

Can You Tell It'S AI? Human Perception of Synthetic Voices in Vishing Scenarios

Large Language Models and commercial speech synthesis systems now enable highly realistic AI-generated voice scams vishing, raising urgent concerns about deception at scale. Yet it remains unclear whether individuals can reliably distinguish AI-generated speech from human-recorded voices in...

Mandiant Finds ShinyHunters-Style Vishing Attacks Stealing MFA to Breach SaaS Platforms

Google-owned Mandiant on Friday said it identified an "expansion in threat activity" that uses tradecraft consistent with extortion-themed attacks orchestrated by a financially motivated hacking group known as ShinyHunters. The attacks leverage advanced voice phishing aka vishing and bogus...