A new survey shows that 89 percent of consumers want fraud notification through multiple channels. The number of identity fraud victims in the United States increased by 12 percent to 11.1 million adults in 2009. A call to the home phone is the preferred way for consumers to be contacted if fraudulent activity is suspected on their card (84 percent), but a call to their mobile phone is a more popular contact channel than email (54 percent) Receiving a text message is a preferred channel of more than one in three consumers (35 percent)”]
Source: https://www.cuinfosecurity.com/blogs/how-when-to-deliver-bad-news-to-your-customers-p-514