🎯 What is a Supply Chain Attack?
A Supply Chain Attack compromises a trusted vendor or library to reach the actual target. SolarWinds hit 18,000+ orgs. MOVEit hit 2,500+. Log4Shell hit millions of Java apps. One vendor = thousands of victims.
🔍 How it works:
1. Attacker compromises a trusted vendor
2. Injects malicious code into a legitimate update
3. Victim installs "trusted" software
4. Backdoor deployed → lateral movement
5. Cascade effect across all customers
Common Attack Surfaces:
- Software vendors (SolarWinds, Kaseya)
- Open source libraries (npm, PyPI, Maven)
- CI/CD pipelines (Codecov)
- Container images (3CX)
- MSPs and IT providers
Famous Cases:
- SolarWinds (2020) — 18,000+ orgs
- MOVEit (2023) — 2,500+ orgs
- Log4Shell (2021) — millions of Java apps
- Kaseya (2021) — 1,500+ MSPs
⚠️ Why dangerous:
- Bypasses defenses (trusted software)
- Massive blast radius
- Hard to detect
- 10x cost vs direct attack
💡 Defense:
- SBOM — know your dependencies
- SLSA — secure build framework
- Sigstore — sign and verify packages
- SCA tools — Snyk, Dependabot
- Vendor audits — SOC 2, SIG
- Zero Trust — assume compromise
- Network segmentation
💡 Bottom line: You are only as secure as your weakest vendor. Every modern app has hundreds of dependencies. Verify everything.
#SupplyChainAttack #CyberSecurity #InfoSec #SBOM #ZeroTrust #InfoSecTube
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July 7, 2026 280 2
