Indian authorities say October\u2019s Mumbai blackout was \u201chuman error,\u201d not cybersabotage. CISA directs US civilian agencies to clean up Microsoft Exchange on-premise vulnerabilities. More effects of the Accellion FTA supply chain compromise. Some trends in social engineering. Andrea Little Limbago brings us up to date on the RSA supply chain sandbox. Our guest is Brittany Allen from Sift on a new Telegram fraud ring. And happy National Slam the Scam Day.\nFor links to all of today's stories check out our CyberWire daily news brief:\nhttps://www.thecyberwire.com/newsletters/daily-briefing/10/42\nLearn more about your ad choices. Visit megaphone.fm/adchoices