Happy Slam the Scam Day. Indian authorities continue to investigate grid incidents. CISA tells US Federal agencies to clean up Exchange bugs by noon tomorrow. Supply chain compromise.

Indian authorities say October’s Mumbai blackout was “human error,” 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. For links to all of today's stories check out our CyberWire daily news brief: https://www.thecyberwire.com/newsletters/daily-briefing/10/42 Learn more about your ad choices. Visit megaphone.fm/adchoices