Attоrney Aаrоn Arоnsky is а solo prаctitioner in Los Angeles who primarily handles family law matters. Aaron represents Carlos Martinez in a divorce. Carlos is emotional and tells Aaron in confidence that he has “hidden $80,000 in cryptocurrency wallets” during the marriage and does not want his spouse to find out. Aaron later mentions to a close friend (who is not involved in the case) that “some clients are definitely hiding assets in crypto these days—it’s a growing problem in divorce cases.” Aaron bills Carlos $500/hour. In one month, he: Bills 8 hours for “document review,” but actually spent 4 hours reviewing documents and 4 hours on personal errands. Charges Carlos for “legal research,” but delegates most of the work to an unlicensed paralegal at no reduced rate. Sends vague invoices such as “work on case – 10 hours” without detail. Carlos questions the bill. Aaron responds: “This is standard billing practice in family law. All attorneys round their time.” -- Aaron previously represented Carla Chen in a custody dispute two years ago. The representation involved confidential discussions about Carla’s mental health history and parenting concerns. Aaron is now asked to represent Carla’s ex-husband in a modification of custody. Aaron believes the prior case is “closed” and that he can be objective. Carla does not consent. Aaron also proposes to represent both spouses in a mediated settlement because he believes it will be “more efficient and cheaper for everyone,” and both parties initially seem open to it. What ethical violations, if any, has Attorney Aaron committed? Answer according to California and ABA, and note any difference if any.