As the degree of account takeovers and unauthorized access attempts continues to be more and more sophisticated, the time to notify users about security-critical situations has become a vital issue. The moment when a system becomes aware of irregular behavior — such as a log from a new device or suspicious activity — it is necessary that the corporation ensures users are immediately notified and receive the notice through a reliable channel.
One source of a channel (such as email only) is not enough. When they are sent, shortcomings in the technology of delivery arise. Multi-channel approaches, in contrast, increase the likelihood of the messages’ delivery and further action by the users who improve their accounts by this and reduce the possible compromise risk.
