Latest cybersecurity reporting from selected sources.

CRM Data Theft Tied to OAuth Tokens Stolen From Third-Party Market Intelligence AppSalesforce disabled connections to its customer relationship management environment from third-party app Klue Battlecards as a response to a "security incident." Attackers breached Klue's platform, generated OAuth tokens for Salesforce and stole data, now being held to ransom.

Investigators Found Months of Unchecked Database Scraping ActivitySouth Korea's privacy regulator fined Coupang a record 624.7 billion won after concluding that weak authentication controls, insider access abuse, evidence destruction and unauthorized data collection contributed to the exposure of personal information belonging to 33.7 million people.

Attacker First Compromised AI Tool Used by Vercel Employee, Platform Provider FindsCloud platform provider Vercel said an attacker breached its systems and stole customer data after compromising a third-party agentic artificial intelligence tool used by an employee, called Context.ai, and stealing from it credentials and OAuth tokens tied to multiple services and customers.

Lawsuit Claims SonicWall Cloud Backup Flaw Led to Ransomware Attack Against MarquisMarquis Software Solutions has sued SonicWall alleging a cloud backup data breach exposed firewall configuration files, including credentials and multifactor authentication scratch codes. The firm says the breach enabled an August 2025 ransomware attack and triggered dozens of class action lawsuits.

'Widespread Data Theft Campaign' Compromised Many Drift OAuth Tokens, Warn ExpertsThreat researchers report that "a widespread data theft campaign" traces to attackers stealing OAuth access tokens for applications integrated with Salesloft's AI chatbot Drift, then exfiltrating data. Victims include Salesforce customer Zscaler. Google Workspace instances were also breached.

Healthplex, Part of UnitedHealth Group, Lacked MFA on Compromised Email AccountNew York State has fined a dental plan administrator owned by UnitedHealth Group $2 million for failing to protect data with multifactor authentication and other issues related to a phishing breach that affected 90,000 people. It's the state's second fine against Healthplex for the same breach.

UK ICO Says Advanced's Security Measures 'Fell Seriously Short'A British IT service company must pay a 3.07 million pound fine for a 2022 ransomware hack that exposed medical records of tens of thousands of National Health Service patients. Hackers breached the Advanced system through a user account that did not have multifactor authentication in place.

Why MFA and Data Minimization Remain Key for Preventing Massive Data BreachesWhile PowerSchool's investigation into the massive theft of its customers' data is continuing, clear lessons have already emerged. Count among them the importance of using multi-factor authentication, which could have safeguarded access to PowerSchool's exploited customer support systems.

Also: Hacker Sells Data Obtained Through Snowflake AttackThis week, Microsoft deprecated NTLM authentication, a hacker put apparently stolen Snowflake data up for sale, Ticketmaster confirmed its breach, Cisco patched Webex vulnerabilities, pro-Russian hacktivists claimed a DDoS attack in Spain and Kaspersky launched a free virus removal tool for Linux.

All Dropbox Sign Users' Emails Stolen, Plus Some MFA and OAuth Tokens, API KeysDropbox said hackers breached its infrastructure and stole swaths of customer data for its legally binding electronic signature service, Dropbox Sign, including names, emails, hashed passwords and authentication tokens. The company has begun forcing password resets and API key rotation.