By James Pearson LONDON (Reuters) – Police in Britain have arrested seven people following a series of hacks by the Lapsus$ hacking group which targeted major firms including Okta Inc and Microsoft Corp, City of London Police said on Thursday. San Francisco-based Okta Inc, whose authentication services are used by some of the world’s biggest companies to provide access to their networks said on Tuesday that it had been hit by hackers and that some customers may have been affected. “The City of London Police has been conducting an investigation with its partners into members of a hacking group,…