1. A study by researchers from Stanford University and CISPA Helmholtz Center suggests that the risk of malicious extensions in the Chrome Web Store is higher than what Google acknowledges. 2. The study found over 346 million users installed a Security-Noteworthy Extension (SNE) in the last three years, with SNEs remaining in the store for an average of 380 days. 3. The researchers recommend Google monitor extensions for code similarity and improve maintenance to enhance security.