All news in category “Incidents and Data Breaches”

🔒 Microsoft disclosed an active supply-chain attack that compromised an @antv npm maintainer account and published malicious versions of charting libraries, including echarts-for-react. The obfuscated ~499 KB JavaScript payload executes during npm install and targets GitHub Actions runners to harvest secrets from GitHub, AWS, HashiCorp Vault, npm, Kubernetes and 1Password by scraping process memory and enumerating secret stores. The campaign leverages privilege escalation, dual-channel exfiltration, and SLSA provenance forgery to evade detection; GitHub removed malicious packages and invalidated exposed tokens.

⚠ GitHub confirmed attackers exfiltrated code from roughly 3,800 internal repositories after a compromised employee device and a poisoned VS Code extension were used to gain access. The company detected and contained the compromise on May 19, removed the malicious extension, isolated the endpoint, and began incident response. A threat actor calling itself TeamPCP posted lists of stolen repos and claimed responsibility, threatening to leak the data if not sold. GitHub is rotating secrets, analyzing logs, and said it will publish a full incident report when investigations conclude.

🔐 Grafana confirmed its recent data breach stemmed from a single missed GitHub workflow token that was exfiltrated after malicious TanStack npm packages executed in its CI/CD environment. The company detected the intrusion on May 1, rotated most tokens, and launched its incident response, but one token was overlooked and allowed attackers repository access. Grafana says source code wasn't altered and no customer production systems were impacted.

📱 Zimperium's zLabs uncovered a 10-month Android malware campaign that used nearly 250 fake apps to enroll victims in premium carrier billing services across Malaysia, Thailand, Romania and Croatia. The operation, running from March 2025 to January 2026, included three variants that ranged from cookie- and SMS-harvesting to a fully automated subscription flow against DiGi. The most advanced variant abused Google's SMS Retriever API, forced traffic onto cellular, loaded hidden carrier billing pages and intercepted one‑time passwords. Users are advised to avoid sideloading apps, verify installed apps and review mobile bills for unexplained charges.

🚨 The Mini Shai-Hulud worm resurfaced in a coordinated supply-chain wave that published 639 malicious versions across 323 npm packages tied to the AntV visualization ecosystem on 19 May, lasting roughly an hour. Analysis by Socket and updates from Microsoft show the payload added preinstall hooks executing an obfuscated Bun bundle to harvest cloud and CI secrets. Many affected packages are high-download dependencies and the compromised maintainer account held rights to over 500 packages. Responders should pin pre-19 May versions, rotate exposed credentials and audit GitHub for forged repository activity.

🔒 Microsoft says it disrupted a malware-signing-as-a-service operation, codenamed OpFauxSign, that abused Artifact Signing to produce short-lived fraudulent code-signing certificates and deliver signed malware. The company seized the SignSpace site signspace[.]cloud, took hundreds of virtual machines offline, and blocked hosting for the underlying code. Operators tied to the group, called Fox Tempest, sold signing services for $5,000–$9,000 and facilitated distribution of Rhysida ransomware and loaders like Oyster. Microsoft added the actor likely used stolen U.S. and Canadian identities to pass verification and repeatedly adapted its tradecraft as defenders revoked certificates.

🛡️ SentinelOne researchers describe a new SHub variant named Reaper that targets macOS users by impersonating Apple, Google, and Microsoft across a single attack chain. The campaign uses fake security alerts and a ClickFix-style workflow to trick victims into running malicious AppleScript via the applescript:// URI handler and the Script Editor, bypassing Terminal paste protections. Reaper performs environment checks, drops payloads, and establishes persistence through LaunchAgents, then harvests credentials, Keychain items, cryptocurrency wallets, and messaging data. Defenders are advised to shift toward behavior-based detection and monitor Script Editor, osascript, and suspicious LaunchAgent activity.

🔒 ESET researchers report that the China-aligned APT group Webworm expanded operations in 2025 to target European government organizations in Belgium, Italy, Poland, Serbia and Spain, and also compromised a university in South Africa. Analysis presented at ESET World on 19 May by Robert Lipovsky described the campaign as largely semi-opportunistic, with some cases linked to legacy vulnerabilities such as a discontinued SquirrelMail flaw. The group introduced two new backdoors — Discord-based EchoCreep and Microsoft Graph-based GraphWorm — and continues to use a complex set of proxy tools and cloud-based data exfiltration techniques.

🔒 GitHub confirmed that a third party accessed roughly 3,800 internal repositories after a likely “poisoned” Visual Studio Code extension was found on an employee device on May 19. The intrusion was claimed by the TeamPCP group, which posted on the Breached forum and linked the access to private source code. GitHub says it has contained the incident, removed the malicious extension, isolated the endpoint and prioritized rotation of critical secrets. The company will publish a more detailed report when its investigation is complete.

🔒 Security researchers warn of a new scareware strain, CypherLoc, used in around 2.8 million attacks since early 2026. The campaign starts with phishing that directs victims to a malicious page which only activates when specific URL fragments and cryptographic checks pass. Once triggered, the code forces full-screen browser lockdowns, disables controls, displays fake security warnings and a fraudulent support number, with operators posing as Microsoft support. Barracuda urges anti-phishing, browser and endpoint protections and user education to mitigate the threat.

🛡️ ESET researchers analyzed Webworm’s 2025 campaigns and found a shift from traditional RATs to stealthier proxy tools and two new backdoors, EchoCreep and GraphWorm, which abuse Discord and the Microsoft Graph API for C2. They decrypted over 400 Discord messages, uncovered GitHub staging repositories and a compromised Amazon S3 bucket, linking infrastructure to Vultr and IT7 Networks. Victims across Europe and South Africa were targeted; identified services have been taken down and impacted parties notified.

⚠️ The FBI's IC3 issued an advisory on 15 May 2026 about the ShinyHunters extortion gang breaching an online learning management system used by US educational institutions. Although the advisory avoided naming the vendor, reporting and Instructure's confirmation made clear Canvas was affected and the company reportedly paid a ransom after receiving alleged 'shred logs'. The FBI warns victims not to engage with extortionists, enable multi‑factor authentication, and remain vigilant against phishing, harassment, and swatting; students and staff should assume their data may be exposed and await official guidance.

🔒 GitHub confirmed that roughly 3,800 internal repositories were breached after an employee installed a trojanized VS Code extension; the company removed the malicious version from the Marketplace and isolated the compromised device. It says its current assessment indicates exfiltration was limited to GitHub-internal repositories and that it has found no evidence so far of customer data outside the affected repos being impacted. The incident is under active investigation while GitHub continues incident response.

🔒 Grafana Labs said an investigation into its May 11, 2026 incident found no evidence that customer production systems or Grafana Cloud operations were compromised. The company said the scope was limited to its GitHub environment, where both public and private source code and internal repositories containing business contact names and emails were accessed. Grafana attributed the breach to the TanStack npm supply chain attack by TeamPCP, rotated tokens, enhanced monitoring, and audited commits to secure its repositories.

🔒 GitHub is investigating unauthorized access to its internal repositories after the hacker group TeamPCP posted on the Breached forum claiming possession of approximately 4,000 private code repositories and seeking at least $50,000. GitHub said it currently has no evidence that customer data stored outside its internal repositories was affected and is monitoring infrastructure for follow-on activity. The company will notify any affected customers through established incident channels. TeamPCP has been linked to previous supply-chain compromises, raising broader concerns.

🔒 GitHub is investigating unauthorized access to internal repositories after threat actor TeamPCP listed what it claims is the platform's source code and internal org data for sale. The company says it has no current evidence of customer impact outside internal repositories and has rotated critical secrets while monitoring for follow-on activity. GitHub reported the compromise involved a poisoned Visual Studio Code extension and directional consistency with the attacker's claim of ~3,800 repositories.

🔒 Microsoft says it disrupted a malware-signing-as-a-service operation that abused its Azure Artifact Signing platform to generate fraudulent short-lived code-signing certificates used by ransomware gangs and other cybercriminals. The actor, tracked as Fox Tempest, created over 1,000 certificates and hundreds of Azure tenants and subscriptions. Microsoft seized the signspace[.]cloud domain, took virtual machines offline, revoked certificates, and filed a lawsuit in the Southern District of New York.

🔒 A public GitHub repository tied to a suspected CISA contractor exposed plain-text credentials—AWS tokens, GitHub access tokens, Kubernetes files, workflows and internal documents—discovered on May 14 by GitGuardian. The repo, active since November 13, 2025, contained roughly 844 MB of data and was taken offline within a day after disclosure. CISA is investigating and reports no current indication of sensitive compromise. Experts recommend centralized secret management, automated secret scanning, strict vendor controls and MFA to prevent similar exposures.

🔐 Microsoft reports that a threat actor tracked as Storm-2949 is abusing Self-Service Password Reset (SSPR) and social engineering to steal Microsoft Entra ID credentials and bypass MFA for privileged users. The attackers trick targets into approving authentication prompts, reset passwords, remove MFA, and enroll Microsoft Authenticator on attacker devices. Using Microsoft Graph and custom scripts they enumerate tenants, exfiltrate files from OneDrive and SharePoint, and pivot into Azure to harvest secrets from Key Vaults, storage accounts, and SQL databases. Microsoft recommends least privilege, conditional access, phishing-resistant MFA for admins, limiting RBAC, and extended Key Vault logging to mitigate these attacks.

🔒 The npm registry suffered a fast-moving supply-chain compromise on May 19 after attackers gained access to a high-privilege maintainer account (atool), pushing 637 malicious versions across 317 packages and infecting a large portion of the AntV namespace. The payload, a Mini-Shai-Hulud worm, steals npm/GitHub tokens and credentials and exfiltrates data to public GitHub repositories. AntV maintainers deleted infected versions, deprecated remaining packages, and advised users to audit, rotate credentials, and install known-safe releases.