Dominic Cummings has been asked to answer questions to the Investigation into disinformation during the referendum, and has refused to do so.
A bit of background, cummings was the strategist for Vote Leave, and was the chap who involved Cambridge Analytica in their campaign. Thats important because its regarded that Cambridge analytica broke the law in the way that they harvested information. They harvested social media information by using those stupid facebook games that people play, and grant them access to their profiles, but not only do the grant them access to their own profiles, they grant them access to all the information on the profiles on their friends list, to the point they gather about 500 data points on each facebook profile they have access to, by abusing API's against the terms and conditions of facebook. Using those data points they targeted undecided votes with fake adverts to push them toward leave. The tooling they built to do this was also used in Trumps campaign and a number of times previously, in one example to stop young voters from a specific ethnic background from voting.
The tooling used is so powerful it is classified as a weapon and has to be reported to numerous services such as MI5, MI6 and GCHQ if deployed from the UK against another country, but because it was deployed from the UK against UK citizens, it didn't have to be.
In short Dom Cummings is an absolutely disgusting cunt who should be in prison.