Megalodon chums the waters in 5.5K+ GitHub repo poisonings
A new malware campaign named Megalodon has compromised over 5,500 GitHub repositories by pushing malicious commits. This attack, which follows previous incidents like TeamPCP, targets CI/CD pipelines to steal sensitive credentials from cloud services. Experts warn that the ongoing wave of supply chain attacks poses significant risks to developers and companies using GitHub.
- ▪Megalodon has infected 5,561 GitHub repositories with credential-stealing malware.
- ▪The malware can exfiltrate AWS secret keys, Google Cloud access tokens, and other sensitive information.
- ▪Experts believe that the current wave of supply chain attacks will continue until major platforms take action against malicious code.
4 outlets in our directory ran this story, first to last over 41 hours. All of the coverage we found sits in one bucket: centre. That one-sidedness is itself worth noticing.
- ▪ Megalodon chums the waters in 5.5K+ GitHub repo poisonings — r/selfhosted
- ▪ Megalodon: Mass GitHub Repo Backdooring via CI Workflows — SafeDep - Real-time Open Source Software Supply Chain Security
- ▪ mass github repo backdooring via CI workflows(Megalodon) — r/cybersecurity
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Story provenance
Attribution is not the same as permission. This drawer separates discovery metadata, excerpts, WeSearch-generated summaries, reuse status, and whether the publisher receives the visit. Nothing here claims a legal grant the publisher has not made.
Record
| Original publisher | The Register |
| Canonical URL | https://www.theregister.com/security/2026/05/22/megalodon-chums-the-waters-in-55k-github-repo-poisonings/5245342 |
| Publication time | Fri, 22 May 2026 20:57:14 +0200 |
| Retrieval time | 2026-05-22T19:07:02.752Z |
| Last seen | 2026-05-22T19:07:02.752Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | nes7P2FOwtJC · 4 stories |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
Rights status (four layers)
WeSearch handling by dimension
| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
(function() { let windowUrl = window.location.href; windowUrl = windowUrl.substring(windowUrl.indexOf('?') + 1); let messageElement = document.querySelector('.shareableMessage'); if (windowUrl && windowUrl.includes('code') && windowUrl.includes('expires')) { messageElement.style.display = 'block'; } })(); Security Megalodon chums the waters in 5.5K+ GitHub repo poisonings Will Jason Statham save us? Jessica Lyons Jessica Lyons Published fri 22 May 2026 // 19:57 UTC A malware-spreading scumbag swimming through GitHub pushed malicious commits to more than 5,500 repositories on Monday as part of an automated campaign called Megalodon.Similar to the earlier TeamPCP attacks that poisoned about 3,800 GitHub repositories, this new campaign has so far infected 5,561 repos with CI/CD…
Excerpt limited to ~120 words for fair-use compliance. The full article is at The Register.
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