US and Russian talks over Ukraine conclude with an agreement to further exchanges next week. Western governments continue to recommend vigilance against the threat of Russian cyberattacks against critical infrastructure. The US Treasury Department sanctions four Ukrainian nationals for their work on behalf of Russia’s FSB and its influence operations. A firmware bootkit is discovered in the wild. Security turnover at Twitter. Caleb Barlow looks at wifi hygiene. Our guest is Allan Liska on his latest ransomware book. And a number station gets hacked, in style.

For links to all of today's stories check out our CyberWire daily news briefing:
https://thecyberwire.com/newsletters/daily-briefing/11/14