All news with #oauth app abuse tag

⚠️ Straiker STAR Labs researchers disclosed a zero-click agentic browser attack that can erase a user's entire Google Drive by abusing OAuth-connected assistants in AI browsers such as Perplexity Comet. A crafted, polite email containing sequential natural-language instructions causes the agent to treat housekeeping requests as actionable commands and delete files without further confirmation. The technique requires no jailbreak or visible prompt injection, and deletions can cascade across shared folders and team drives.

🔐 Salesforce disclosed unauthorized access tied to Gainsight-published apps using OAuth integrations, saying it revoked all active access and refresh tokens and temporarily removed those apps from the AppExchange while investigators continue their work. Gainsight confirmed the incident, has engaged Mandiant for forensics, and revoked related connector access across other marketplaces. Google Threat Intelligence linked the activity to actors associated with ShinyHunters, echoing prior token-abuse campaigns against Salesloft and Drift. The incident highlights supply-chain risks in SaaS OAuth integrations and reinforces urgent recommendations to audit and revoke suspicious tokens.

🔒 Salesforce reported detected 'unusual activity' involving Gainsight-published applications that used OAuth connections to its platform and said the activity may have enabled unauthorized access to some customers' Salesforce data. The company revoked all active access and refresh tokens for affected apps and temporarily removed those listings from the AppExchange while it investigates. Gainsight also pulled its app from the HubSpot Marketplace as a precaution. Security analysts have linked the activity to the ShinyHunters (UNC6240) group and are urging customers to review and revoke suspicious third-party integrations.

🔐 Datadog Security Labs has described a new phishing technique called CoPhish that abuses Copilot Studio agents to present fraudulent OAuth consent requests on legitimate Microsoft-hosted demo pages. Attackers can configure an agent’s Login topic to deliver a malicious sign-in button that redirects to a hostile application and exfiltrates session tokens. Microsoft confirmed it will address the underlying causes in a future update and recommends governance and consent hardening to reduce exposure.

⚠️ Researchers at SquareX warn that malicious browser extensions can inject fake AI sidebars into AI-enabled browsers, including OpenAI Atlas, to steer users to attacker-controlled sites, exfiltrate data, or install backdoors. The extensions inject JavaScript to overlay a spoofed assistant and manipulate responses, enabling actions such as OAuth token harvesting or execution of reverse-shell commands. The report recommends banning unmanaged AI browsers where possible, auditing all extensions, applying strict zero-trust controls, and enforcing granular browser-native policies to block high-risk permissions and risky command execution.

🔍 Matt Kiely of Huntress Labs urges Microsoft 365 administrators to audit OAuth applications across their tenants and provides a pragmatic starting tool, Cazadora. The research shows both abused legitimate apps (Traitorware) and bespoke malicious apps (Stealthware) can persist for years and that Azure’s default user-consent model enables these abuses. Operators should check Enterprise Applications and Application Registrations for suspicious names, anomalous reply URLs (notably a localhost loopback with port 7823), and other anomalous attributes, then take remediation steps.

🔐 Token theft is now a primary vector for SaaS breaches, with stolen OAuth, API keys, and session tokens enabling attackers to bypass MFA and access integrated services. High-profile incidents from 2023 to 2025 show how a single unrotated token can compromise code, secrets, or customer data across platforms. Teams should prioritize discovery, continuous monitoring, and strict token hygiene—rotation, least-privilege scopes, approval workflows, and prompt revocation.

🛡️ Modern cloud work lives across email, files, chat, and a mesh of integrations, and attackers increasingly exploit trusted OAuth grants rather than compromising accounts directly. In early August the actor behind recent Salesforce intrusions used stolen Drift email tokens to access a small set of Google Workspace mailboxes; Google revoked the tokens and disabled the integration on August 9. Material Security advocates shifting from perimeter-only defenses to content-centric controls such as message-level MFA, OAuth governance, and automated containment to make stolen tokens far less damaging.

🔓 The Trinity of Chaos collective has opened a data leak site on the TOR network, publishing previously undisclosed records tied to past breaches and listing 39 major global firms. Resecurity says the group claims more than 1.5 billion records across 760 companies and has set an October 10 negotiation deadline. Samples reportedly contain substantial PII and appear to stem from compromised SaaS environments via stolen OAuth tokens and vishing; the FBI has issued a flash alert. The group also threatened to leverage existing litigation and regulatory complaints against Salesforce, which has denied new vulnerabilities.

🔓 The Scattered Lapsus$ Hunters gang opened a public data-leak site claiming it stole Salesforce data from dozens of global companies, including Salesforce, Toyota, FedEx, Disney/Hulu, Marriott and Google. The group set an Oct. 10 deadline for ransom payments and threatened to publish or even use stolen documents in legal actions if demands are not met. Salesforce says its investigation found no indication the platform itself was compromised and attributes the incidents to past or unsubstantiated claims. Researchers link many breaches to vishing that installs malicious connected apps and to compromised OAuth tokens in Salesloft Drift, underscoring a broader SaaS supply-chain risk.

🔒 Google Threat Intelligence Group (GTIG) tracks UNC6040, a financially motivated cluster that uses telephone-based social engineering to compromise SaaS environments, primarily targeting Salesforce. Operators trick users into authorizing malicious connected apps—often a fake Data Loader—to extract large datasets. The guidance prioritizes identity hardening, strict OAuth and API governance, device trust, and targeted logging and SIEM detections to identify rapid exfiltration and cross‑SaaS pivots.

📩 Attackers abused GitHub's notification system to send fake Y Combinator W2026 invitations by creating issues and tagging users so the platform would deliver legitimate-looking emails. The lure promised participation in a purported $15 million funding program and linked to a typo-squatted domain. That site ran obfuscated JavaScript and presented an EIP-712-style wallet verification prompt that, when signed, authorized draining transactions.

🔒 The ShinyHunters extortion group claims they stole approximately 1.5 billion Salesforce records from 760 companies by abusing compromised Salesloft Drift and Drift Email OAuth tokens exposed in a Salesloft GitHub breach. The attackers reportedly accessed Account, Contact, Case, Opportunity, and User tables and searched exfiltrated data for secrets to pivot further. Google/Mandiant and the FBI are tracking the activity as UNC6040/UNC6395, and Salesforce urges customers to enable MFA, enforce least privilege, and manage connected apps carefully.

🔒 On September 29 at 12:00 PM ET, BleepingComputer and SC Media will host a live webinar featuring browser security experts from Push Security to examine how modern web browsers have become a primary enterprise attack surface. The session will cover malicious and shadow extensions, session token theft, OAuth abuse, and emerging ClickFix and FileFix techniques, plus mitigation strategies. Attendees will learn practical detection and response approaches to protect SaaS sessions, restore visibility at the web edge, and close gaps missed by traditional endpoint and identity controls.

🔒 Browser-targeted attacks are rising as adversaries treat the browser as the primary access point to cloud services and corporate data. The article defines browser-based attacks and enumerates six high-risk techniques: credential and session phishing, ClickFix-style copy-and-paste exploits, malicious OAuth consent flows, rogue extensions, malicious file delivery, and credential reuse where MFA gaps exist. These vectors are effective because modern work happens in decentralized SaaS environments and across many delivery channels, making traditional email- and network-centric defenses less reliable. The piece highlights visibility gaps for security teams and points to vendor platforms such as Push Security that claim to provide in-browser detection and remediation for AiTM phishing, OAuth abuse, and session hijacking.

🔔 The FBI issued a FLASH advisory linking two threat clusters, UNC6040 and UNC6395, to intrusions of corporate Salesforce environments that resulted in data theft and extortion. Early campaigns relied on social engineering and malicious Data Loader OAuth apps to mass-exfiltrate Accounts and Contacts, while later activity used stolen Salesloft/Drift OAuth and refresh tokens to access support cases and harvest secrets. Multiple large enterprises were impacted and the FBI released IOCs to help organizations detect and mitigate compromise.

⚠️ The FBI released IoCs linking two threat clusters, UNC6040 and UNC6395, to a series of data theft and extortion attacks that targeted organizations' Salesforce environments. UNC6395 exploited compromised OAuth tokens tied to the Salesloft Drift app after a March–June 2025 GitHub breach, prompting Salesloft to isolate Drift and take its AI chatbot offline. UNC6040, active since October 2024, used vishing, a modified Data Loader and custom Python scripts to hijack instances and exfiltrate bulk data, while extortion activity has been associated with actors using the ShinyHunters brand.

🔐 This Unit 42 report describes how compromised OAuth tokens in third‑party integrations create severe supply‑chain exposure, using recent incidents as examples. It highlights three recurring weaknesses: dormant integrations, insecure token storage and long‑lived credentials, and explains how attackers exploit these to exfiltrate data and pivot. The authors recommend token posture management, encrypted secret storage and centralized runtime monitoring to detect and revoke abused tokens quickly.

🔒 Researchers disclosed two coordinated campaigns that distribute fake browser extensions via malvertising and counterfeit sites to steal credentials, session tokens, and hijack Meta business accounts. Bitdefender documented ads pushing a fake "Meta Verified" add‑on named SocialMetrics Pro that harvests Facebook session cookies and exfiltrates them to a Telegram bot while also querying ipinfo[.]io for IP data. Cybereason described a separate campaign using counterfeit sites promoting a bogus Madgicx Plus platform and multiple rogue Chrome extensions that request broad site access, capture Google identity data, then pivot to Facebook to facilitate account takeover.

🔒 Salesloft confirmed that a threat actor gained access to its GitHub account between March and June 2025, using that access to download repositories, add a guest user and create workflows. The attacker then moved into the Drift app environment, obtained OAuth tokens and used Drift integrations to access customers’ Salesforce instances and exfiltrate secrets. Affected customers include security vendors such as Tenable, Qualys, Palo Alto Networks, Cloudflare and Zscaler. Google Mandiant performed containment, rotated credentials and validated segmentation; the incident is now in forensic review.