Achieving Lasting Electoral Reforms on Transparency and Security Act or the ALERTS Act This bill requires federal agencies and state and local governments to provide notification regarding election cybersecurity incidents. Specifically, federal entities must share information about an election cybersecurity incident with the Department of Homeland Security (DHS). If there is credible evidence that an unauthorized intrusion into an election system occurred that put voter information or other systems at risk, DHS must, with limited exceptions, share this information with relevant state and local offices and with appropriate members of Congress. State and local election offices must notify individuals possibly affected by this intrusion.