The reframing of typosquatting from an end-user vigilance problem to a systemic supply-chain vulnerability marks a critical evolution in how defenders must approach the software build and distribution pipeline. Where traditional coverage focused on users mistyping URLs, the current threat embeds lookalike domains inside approved third-party scripts and extensions, bypassing perimeter controls entirely. This aligns with broader patterns seen in infrastructure attacks, from the SolarWinds compromise to recent npm ecosystem infiltrations, where attackers leverage trusted channels for persistence and data exfiltration. Sonatype's 2025 supply chain report documented a 156% surge in malicious package uploads, while Snyk's analysis of browser-based threats highlighted how 40-60 third-party scripts on typical web properties create blind spots for firewalls and CSPs. The Trust Wallet incident, involving the Shai-Hulud worm harvesting credentials to trojanize a Chrome extension, demonstrates the economic shift enabled by LLMs: campaigns that once took weeks now deploy in under ten minutes using homograph domains that evade string-based detection. This is not isolated to crypto; the same vector threatens payment processing and analytics pipelines across critical sectors. Government actions, including CISA's evolving software bill of materials mandates, reflect recognition that edge monitoring alone cannot secure the full lifecycle. What original reporting missed is the potential for these techniques to scale into geopolitical power shifts, where state actors could insert surveillance or disruption capabilities into widely distributed assets without breaching servers. Detection now requires runtime attestation of script behavior and automated pipeline scanning rather than manual reviews, which volume has rendered obsolete.