Top 5 famous software supply chain attacks in 2023

### Executive summary This article explains the rising risk of software supply chain attacks by reviewing notable 2023 incidents (including UCSF, Airbus, Norton/Gen Digital, Colonial Pipeline, and Microsoft), describing attacker exploitation of third-party services and components that led to data theft, code injection, ransomware-driven operational outages, and ransom payments; it concludes with practical mitigation guidance such as supply-chain security programs, vendor risk assessment, software composition analysis, patching, employee training, and incident response planning.