Barring a last-minute deal, the US federal government would shut down on Wednesday, October 1, and the 2015 Cybersecurity Information Sharing Act would lapse at the same time, threatening what many consider a critical plank of US cybersecurity policy. The CISA Act of 2015 (not to be confused with the CISA Act of 2018, which established the government agency of the same name; the CISA referred to throughout this story is the Information Sharing law, not the agency) is due to expire 12:01 am ET on October 1, the same moment federal funding lapses absent a continuing resolution.