The National Security Centre (NCSC) guidance for SMEs to help protect your organisation and email accounts from future compromise:
https://www.ncsc.gov.uk/section/information-for/small-medium-sized-organisations
sobus
20 Dawes Road, London, SW6 7EN
Telephone 020 7952 1230
Email info@sobus.org.uk
Registered Charity No.1071089
and Company Limited by Guarantee. Registered in England No.03471416
Sobus is a new Community Development Agency for Hammersmith & Fulham. It has been created through the merger of the Community and Voluntary Sector Association Hammersmith & Fulham (CaVSA) and the Fulham Community Partnership Trust (FCPT). Building on the strengths of both organisations, sobus aims to provide a wider range of support services for local charities, community groups, social enterprises and start up businesses.