GCA, an international, cross-sector organisation, are offering a number of guides and resources helpful for those working remotely:
NCSC is a government agency that provides advice and support for the public and private sector in how to avoid computer security threats.
They publish weekly threat reports on COVID-19 related fraud and scams
Cyjax aims to provide effective cyber threat intelligence solutions to tackle the growing number of digital threats that organisations and people face today. They have written several whitepapers regarding COVID-19 cyber threats.