Domain Name System (DNS) is the most ubiquitous protocol on the Internet. It’s used by software to check licences, by video services to get around firewalls and, all too often, by hackers stealing data from your business. Few businesses do any monitoring of their DNS traffic despite it being the source of many attacks. A recent Vanson Bourne study found that 75 percent of U.S. and U.K. businesses had suffered a DNS attack (including denial of service and DNS hijacking as well as data theft through DNS)”]
Source: https://www.csoonline.com/article/2948150/why-you-need-to-care-more-about-dns.html