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Passkey-themed social engineering leads to identity and cloud compromise

Microsoft tracks ongoing cloud intrusions where passkey-themed helpdesk lures enable AiTM credential theft, MFA persistence, and SharePoint data theft.

Microsoft Security Research is tracking active cloud-based intrusions, observed since May 2026, that begin with helpdesk impersonation calls and SMS lures urging urgent passkey, MFA, or SSO updates. The lures lead to adversary-in-the-middle phishing or device-code authentication flows that capture credentials and session tokens or grant actor access, after which the actors add authentication methods, conduct Microsoft Graph reconnaissance, and download SharePoint and OneDrive content via REST APIs. Phishing domains embed victim organization names as subdomains (e.g., contoso.add-passkey[.]com), are often registered with Nicenic, and go operational within hours. Microsoft advises revoking sessions and removing unauthorized authentication methods for confirmed compromises.

Microsoft Security Blog · 7d agoThreat actor in the wild2

UNC6671 Vishing Attacks Target Personal Phones to Steal SaaS Data

Google and Mandiant attribute vishing-based SaaS data extortion attacks to UNC6671, now operating under the Redact, Pink, Helix, and Falcon brands.

Google Threat Intelligence Group and Mandiant track extortion group UNC6671, which uses vishing calls impersonating IT help desks to lure employees to adversary-in-the-middle phishing pages that capture credentials, MFA tokens, and session tokens. The group then registers adversary-controlled MFA devices, pivots through identity providers into Microsoft 365, Okta, and other SaaS applications, and runs automated Python and PowerShell exfiltration scripts. UNC6671 has rotated through extortion brands including BlackFile, Redact, Pink, Helix, and Falcon, and Google tracked over $10.6 million in Bitcoin payments between January 7 and May 12, 2026, with initial demands exceeding $3 million. The actor has hit dozens of organizations in North America, Australia, and the UK, shifting toward high-value financial and legal firms in July 2026.

The Hacker Newsupdated · 9d agofirst · 9d agoThreat actor in the wild 2 sources1

Details emerge on BlackFile's recent attacks on financial companies

BlackFile (UNC6671), a The Com-linked extortion crew, keeps hitting financial and med tech firms with voice-phishing IT-support scams and ~$3 million demands.

Google Threat Intelligence Group (tracking BlackFile as UNC6671, linked to The Com) reports the extortion group remains active, shifting focus to the financial sector and med tech organizations, with new Redact-brand extortion demands issued last week. The group impersonates IT support in voice-phishing attacks using hundreds of recruited callers, targets large firms in what researchers call big-game hunting, and processes an average of 1.5 new victims daily. Extortion demands start around $3 million and are typically negotiated below $1 million; Flashpoint observed infrastructure targeting Blackstone, Bain Capital, Moody's, CME, and Apollo, though compromise is unconfirmed. Mandiant has responded to more than two dozen BlackFile compromises since January, and victims face escalation tactics including swatting.

CyberScoop · Aug 17, 2026Threat actor in the wild

Passkey-themed phishing attacks lead to Microsoft 365 data theft

Microsoft links ShinyHunters- and Helix-affiliated actors to passkey-themed vishing and device-code phishing that compromises Microsoft 365 accounts and steals cloud data.

Microsoft attributes passkey- and SSO-themed social engineering activity, observed since May 2026, to Storm-3121 (linked to ShinyHunters and Falcon) and Storm-3032 (tied to BlackFile members now operating as Helix). Attackers impersonate corporate IT help desks by phone or SMS, urging fake passkey, MFA, or SSO updates and directing victims to adversary-in-the-middle phishing pages or device-code authentication flows that yield credentials, session tokens, and OAuth tokens. Post-compromise behavior includes Microsoft Graph enumeration of users, SharePoint, and OAuth grants, plus persistence via attacker-controlled MFA methods. Google Threat Intelligence tracks related activity as UNC6671, linked to the BlackFile, Helix, Falcon, Pink, and Redact extortion gangs.

BleepingComputerupdated · 14h agofirst · 5d agoPhishing & fraud in the wild 9 sources2

IT help-desk vishing tricks executives into handing over Microsoft 365 access

Arctic Wolf tracks PREY-0058 (linked to UNC6671), a vishing campaign stealing Microsoft 365 session tokens via AiTM panels for SaaS data theft and extortion.

Arctic Wolf is tracking a campaign, PREY-0058, sharing tradecraft with Google Threat Intelligence Group's UNC6671, in which callers posing as internal IT talk employees through fake passkey/MFA setups. Operator-controlled adversary-in-the-middle pages harvest passwords and MFA approvals to seize session tokens, then actors enumerate and bulk-exfiltrate data from SharePoint, OneDrive, Exchange, and Box. Extortion brands include BlackFile, Pink, Helix, Cinder, and Redact; targets are mostly US-based executives in construction, healthcare, real estate, finance, and professional services, with exfiltration shifting to residential proxies like NodeMaven.

Help Net Security · 8d agoThreat actor in the wild1

Thomson Reuters Court Software Breach May Have Exposed SSNs and Sealed Data

Unauthorized access to Thomson Reuters' C-Track court platform may have exposed SSNs and sealed records across 11 US states, USVI, and Ontario.

Thomson Reuters' West Publishing disclosed that an unauthorized party obtained files from the C-Track court case management platform starting in March 2026, with access to one environment running from March 1 through June 29, 2026 per Montana's account. Notices name roughly 24 court bodies across 11 US states, the US Virgin Islands, and Ontario, including appellate courts in Minnesota, Ohio, Montana, and Pennsylvania. Exposed data may include names, Social Security numbers, driver's license numbers, dates of birth, medical and health insurance information, and confidential or sealed court records. The company is offering 12 months of Experian or TransUnion monitoring, and courts disagree over whether the vendor's backup cloud environment or the production platform was accessed.

The Hacker News · 13d agoData breach in the wild

US and Canadian court data exposed in Thomson Reuters breach

Thomson Reuters disclosed a breach of its C-Track court platform exposing sealed court records and personal data across 12+ US states and Canada.

Thomson Reuters disclosed that an unauthorized party obtained files from C-Track, its court case management platform, affecting courts in at least 12 US states, the US Virgin Islands and Canada. The company discovered the activity on June 30 and evidence indicates access ran from March through June; the intrusion method, attacker identity and number of affected people remain unknown. Exposed data may include names, Social Security numbers, driver's license numbers, medical information, dates of birth and health insurance details, including some sealed or redacted court records. Affected individuals are being offered 12 months of free credit monitoring and identity theft protection.

The Record · 13d agoData breach in the wild 2 sources

FBI Probes Service Selling 153M+ Drivers Licenses

Dark web service Nexus sells scans of 153M+ US and Canadian drivers licenses, apparently siphoned from a breached identity verification company; FBI opened an inquiry.

A new dark web identity theft service called Nexus, advertised on the Exploit forum, offers scans of more than 153 million drivers licenses from the US and Canada, plus over 10 million ID cards and millions of travel and medical documents. The data appears to come from an ongoing breach at a major Louisiana-based identity verification company, with records growing by roughly 400,000 in 24 hours. Records include high-ranking US officials such as Defense Secretary Pete Hegseth, and timestamps suggest data was captured during car rentals and travel. The FBI's New Orleans field office has launched an official inquiry into the source of the images.

Krebs on Security · 15d agoData breach in the wild1

Extortion Group FulcrumSec Claims 86GB Manchester Airports Data Theft

Extortion group FulcrumSec claims stealing 86GB of Manchester Airports Group data, exposing 8.7 million customers' personal and booking details.

Manchester Airports Group disclosed a breach on August 27 affecting parking, lounge, Fast Track and WiFi registrations at Manchester, London Stansted and East Midlands airports, impacting 8.7 million customers, most exposed only email addresses. FulcrumSec claims it stole about 86GB via airport-specific Iterable API credentials exposed in client-side JavaScript, including a 21.5GB Manchester export with booking histories, marketing data and nearly 200,000 records on upcoming 2026 travel. BleepingComputer verified sample records against a real traveler's Fast Track history; MAG declined to address the group's specific claims. Researchers warn the combination of UK postcodes, vehicle registrations and booking details could enable convincing targeted phishing, and MAG says no payment card or banking data was exposed.

Security Affairs · 17d agoData breach in the wild

Apollo discloses data breach from ongoing wave of attacks hitting financial sector

Apollo Global Management confirmed a breach of cloud platforms by BlackFile-linked social engineering attackers, exposing personal data including Social Security numbers.

Apollo Global Management disclosed that attackers accessed some of its cloud platforms between July 6 and July 10, 2026. The company determined on August 12 that compromised data included names, dates of birth, contact information, home addresses, and Social Security numbers. Google attributed the broader campaign against financial sector organizations to BlackFile, a threat group affiliated with The Com that operates extortion brands Redact, Pink, Helix, and Falcon. Apollo, which manages $1.05 trillion in assets, is the first victim to formally confirm sensitive personal data was compromised in this wave, with Blackstone and Bain Capital also reportedly targeted.

CyberScoop · 26d agoData breach in the wild