Last updated: August 19, 2026 at 1:47 AM UTC
All 741 Vulnerability 286 Breach 129 Threat 319 Defense 7
Tag: data-leak (3 articles)Clear

A single GitHub issue can trick AI workflows into leaking private repository data

Researchers at Noma Labs showed that GitHub's new Agentic Workflows, which let an AI agent read issues and act on repositories automatically, can be tricked into leaking private code through nothing more than a public issue. The technique, GitLost, is indirect prompt injection: an attacker opens an ordinary-looking issue in an organization's public repository, buries plain-English instructions in it, and the agent, which often holds a token with read access across the org's repositories, follows them, fetches files from a private repo, and posts the contents in a public comment. No credentials, coding, or write access are needed. GitHub was notified, but researchers frame it as an architectural weakness.

Check
Review any GitHub Agentic Workflows or similar AI automations, and check whether their agents hold organization-wide or cross-repository read tokens while also processing untrusted content like public issues and pull requests.
Affected
Organizations using GitHub Agentic Workflows where the agent has broad cross-repository read access and reacts to public issues; an attacker can steer it into leaking private repository contents with one crafted issue.
Fix
Scope agent tokens to only the repositories a workflow needs, keep agents reading untrusted input away from private data, restrict which events trigger automation, and require human review before agents post publicly.

ShinyHunters publishes Charter Communications data after failed extortion - up to 5 million customer records now leaked, not just claimed

The ShinyHunters extortion group has now published the Charter Communications data it stole, after the telecom giant apparently refused to pay. Earlier reporting put the breach at 4.9 million HIBP-confirmed unique accounts; ShinyHunters' leak is described as potentially impacting up to 5 million customers. Charter is one of the largest US telecoms, providing internet, cable, mobile, and phone services to residential and business customers under the Spectrum brand. The data was originally exfiltrated via voice-phishing of a Microsoft Entra account on April 1 and a Salesforce export. With the data now public rather than merely claimed, the phishing and identity-theft risk to affected customers rises sharply.

Check
If you are a Charter/Spectrum customer or vendor, treat the leaked dataset as public now. Watch for Spectrum-themed phishing and account-recovery fraud over the next 60-90 days.
Affected
Up to 5 million Charter/Spectrum customers whose records are now publicly leaked, not just claimed. Names, contact details, and plan information enable targeted phishing and impersonation.
Fix
Affected individuals: rotate Spectrum credentials, enable MFA, scrutinize unsolicited Charter contacts. Organizations: refresh breach-monitoring watchlists and brief help desks against Charter-themed social engineering.

Public Amazon S3 bucket leaks 1M+ passports, IDs, and selfies from Japanese hotel check-in platform Tabiq

An Amazon S3 bucket simply named 'tabiq' was left open to anyone who knew the name, exposing over a million passports, driver's licenses, and identity-verification selfies submitted by hotel guests worldwide. The platform, run by Japanese operator Reqrea, handles digital check-in. Researcher Anurag Sen found the bucket and notified TechCrunch and JPCERT; the bucket has since been locked down. Reqrea says the exposed files date from early 2020 through May 2026 and that it does not yet know how the bucket became public. The company is still reviewing access logs to determine whether anyone else accessed the data.

Check
Inventory your S3 buckets for public ACLs or 'AllUsers' policies. If your employees used Tabiq or Reqrea-operated check-in for corporate travel, identify travelers since 2020.
Affected
Hotel guests who checked in through the Reqrea Tabiq platform between early 2020 and May 2026. Exposed data includes passports, driver's licenses, and biometric selfies.
Fix
Enable S3 Block Public Access at the account level. For affected travelers, monitor identity-document fraud alerts and consider passport reissuance for high-risk staff. Watch for phishing referencing real travel history.