PREMANAND NARASIMHAN; DR.N.KALA. A Study of Cyber-Attacks on Healthcare Sector in the US during Covid-19 and Post Covid-19 Periods: Some Lessons Learnt. International Journal of Scientific Research in Computer Science, Engineering and Information Technology, [S. l.], v. 10, n. 6, p. 2409–2423, 2024. DOI: 10.32628/CSEIT2410612441. Disponível em: https://www.ijsrcseit.com/index.php/home/article/view/CSEIT2410612441. Acesso em: 2 aug. 2025.