Lightning Python Package Supply Chain Attack

The Lightning Python package supply chain attack saw malicious versions 2.6.2 and 2.6.3 published in April 2026, targeting developer credentials and affecting over 15,000 dependent projects. This incident cost an estimated $4.2 million in remediation across impacted enterprises, a figure 25% higher than the average Python ecosystem breach in 2025. Compared to #4 WhatsApp Spyware Campaign, which impacted 200 individuals, Lightning's reach demonstrates 75 times broader codebase exposure, underlining why supply chain attacks remain a top-tier threat.