https://www.reuters.com/article/us-usa-databreaches/former-yahoo-ceo-apologizes-for-data-breaches-blames-russians-idUSKBN1D825V >Former Yahoo Chief Executive Marissa Mayer apologized on Wednesday for two massive data breaches at the internet company, blaming Russian agents for at least one of them, at a hearing on the growing number of cyber attacks on major U.S. companies.