In 1983, Ken Thompson warned us: you can't trust code you didn't write yourself. Forty-two years later, a worm called Shai-Hulud proved him right after compromising thousands of packages in hours. Software supply chain attacks aren't just theoretical anymore, they're automated, self-replicating, and could be spreading through the packages your team installed this morning. We break down the s1ngularity and Shai-Hulud campaigns, explain why attackers target developers differently than customers, and give you seven things you can do this week to stop being an easy target.