Views:
As there is no single consistent threat or campaign attributed to the recent events in Europe, there is evidence of widespread defacement of government websites and targeted attacks against government agencies and financial institutions in the region.  Trend Micro has covered some of this activity in our recent blog post:  https://www.trendmicro.com/en_us/research/22/b/ukraine-cyberattack-2022.html.

Update as of March 3, 2022:  Trend Micro has released a new blog entitled: Cyberattacks are Prominent in the Russia-Ukraine Conflict.  In addition to detailed overviews of some of the threats, at the bottom of the article is the updated list of known IOCs - sourced by both Trend Micro and industry partners - for cyberthreats that are suspected to be associated with or linked to the ongoing Russia-Ukraine conflict.  The blog page will continue to be updated with new IOCs as they become available.

In light of this, Trend Micro has put together a list of some very relevant guidance and advisories from various government cyber-security agencies around the globe.  While these may not be specific to any particular threat, the recommendations and guidance given by these various agencies are best practices for organizations looking to increase their security posture.

In addition to the general recommendations below, Trend Micro has published the following blog with some our own best practices:  Global Cyberattacks:  Managing Risk in Chaotic Times.  

Government Agency General Recommendation Chart

Please note that is not an exhaustive list and users are encouraged to visit their local or national government cyber security agency website to see if any specific information has been posted or updated as new information is available (including but not limited to new IOCs and TTPs if applicable).
 
CountryAgencyArticle
AustraliaACSC2022-02: Australian organisations should urgently adopt an enhanced cyber security posture
CanadaCyber CentreHow to identify misinformation, disinformation, and malinformation (ITSAP.00.300)
CanadaCyber CentreApplication allow list (ITSAP.10.095)
FranceANSSITENSIONS INTERNATIONALES : RENFORCEMENT DE LA VIGILANCE CYBER
NetherlandsNCSCGuide to Cyber Security Measures
New ZealandNCSCGeneral Security Advisory: Understanding and preparing for cyber threats relating to tensions between Russia and Ukraine
United KingdomNCSCActions to take when the cyber threat is heightened
United StatesCISASHIELDS UP
United StatesCISAImplement Cybersecurity Measures Now to Protect Against Potential Critical Threats
United StatesCISAUnderstanding and Mitigating Russian State-Sponsored Cyber Threats to U.S. Critical Infrastructure