ペイクラウドホールディングス（PayCloud）

Unauthorized access to Japan email delivery service Arara Message: over 81 million email addresses taken, up to 380 client firms affected

PayCloud Holdings subsidiary Arara said its email delivery service Arara Message suffered unauthorized access; it first disclosed the incident on Oct 29, and its Nov 6 third report put the deduplicated number of taken (or possibly taken) email addresses at 81,329,467 .