Software supply chain failures

<div class="sd"><div class="sd-head"><strong>SUPPLY CHAIN</strong><span id="state">live check</span></div><div class="sd-stage"><div class="chain"><div class="tile" id="pkg">package</div><div class="tile" id="build">build</div><div class="tile" id="artifact">artifact</div><div class="tile" id="release">release</div></div></div><div class="sd-foot"><span id="caption">checking boundary</span><span>tap to step</span></div></div>

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let n=0;function advance(){n=(n+1)%4;['pkg','build','artifact','release'].forEach((id,i)=>document.getElementById(id).classList.toggle('infected',i<=n));document.getElementById('state').textContent='stage '+(n+1)+' / 4';document.getElementById('caption').textContent=['compromised dependency','build consumes dependency','artifact contains change','release reaches users'][n]}advance();setInterval(advance,650);
document.querySelector('.sd').addEventListener('pointerdown',advance);