Microsoft's Bing search engine was blocked in China yesterday, which prompted speculation in the Telegraph and elsewhere that this was another brick in the Great Firewall. But Bloomberg reports that service has been restored, and that the outage was due to a technical mistake. Redmond itself has been quiet about the incident.

The Intercept argues that concerns about supply chain meddling are real, and that more than one nation-state is involved in such activity.

Kaspersky reports that Russian threat actors Grey Energy and Zebrocy (one of the GRU group Fancy Bear's paws) share tools and techniques.

Military cyber operational capabilities develop into tactical realities: the US Army is establishing two organizations built around the 17th and 41st Field Artillery Brigades to, as Breaking Defense puts it, "hack, jam, sense, and shoot."

Since information campaigns can be expected to follow great power and regional tensions, watch Venezuela. Russia has warned the US against military intervention in the failed Chavista state, NBC News reports. Venezuela is Russia's "strategic partner," Deputy Foreign Minister Ryabkov said, and deposition of President Maduro "would shake the foundations of the development model which we see in Latin America." The US (joined, as Reuters notes, by the UK) supports opposition leader Juan Guaido's constitutional claim to an acting presidency.

Bellingcat seems to have had success in countering Moscow's (and others') information operations. Foreign Policy interviews the citizen journalists.

The Washington Post reports that Microsoft urges adherence to the Paris Call for norms with respect to conduct in cyberspace.