Data firm InfoSum raises $15 million, adds former AT&T leader as executive chairman

Data platform company InfoSum announced on Tuesday it has raised $15.1 million in its Series A funding round, and that Brian Lesser, former chief executive of AT&T Inc’s advertising unit Xandr, has been named executive chairman.
InfoSum, based in the UK, provides technology that allows advertisers, ad agencies and media companies to work together on advertising campaigns without needing to share sensitive consumer data.
The new funding comes at a time when concerns about the use of data are widespread and laws like the California Consumer Privacy Act have been passed to protect data privacy.
Advertisers, which buy ad space, and media companies, sellers of ad space, have traditionally had to send their data to a third party, which would analyze and return the results. Advertisers could then see if potential buyers of their product were audiences of that media company, Nick Halstead, chief executive and founder of InfoSum, said in an interview.