Supply-chain attacks are usually discussed after they become visible: a malicious package, a compromised software update, a malicious extension, or a breach involving a trusted vendor. But before an incident reaches that stage, the early warning signs may look much less obvious.
In underground forums and marketplaces, supply-chain relevance does not always appear under a clear label. A post may not say “supply-chain attack” at all. It may advertise GitHub access, private repositories, source code, API keys, OAuth tokens, cloud credentials, CI/CD data, or a vendor-related leak.
The supply-chain risk comes from where that access sits and what trust relationships it touches.
A recent investigation by Flare researchers of underground posts show that while it is very hard to recognize it, there are often early warning signs in the underground for software supply-chain attacks even before they are published in public as incident reports.
What is a Software Supply-Chain Attack
