Nearly half of businesses report that they were the subject of a cyber-ransom campaign Attack.Ransom in 2016 , according to Radware 's Global Application and Network Security Report 2016-2017 . Data loss topped the list of IT professionals ' cyber attack concerns , the report found , with 27 % of tech leaders reporting this as their greatest worry . It was followed by service outage ( 19 % ) , reputation loss ( 16 % ) , and customer or partner loss ( 9 % ) . Malware or bot attacks hit half of all organizations surveyed in the last year . Some 55 % of respondents reported that IoT ecosystems had complicated their cybersecurity detection measures , as they create more vulnerabilities . Ransomware attacks Attack.Ransom in particular continue to increase rapidly : 41 % of respondents reported that ransom Attack.Ransom was the top motivator behind the cyber attacks they experienced in 2016 . Meanwhile , 27 % of respondents cited insider threats , 26 % said political hacktivism , and 26 % said competition . SEE : HR managers beware : Ransomware could be your next job applicant While large-scale DDoS attacks dominated the headlines of 2016 , this report found that only 4 % of all attacks were more than 50 Gbps , while more than 83 % of DDoS attacks reported were under 1 Gbps . `` One thing is clear : Money is the top motivator in the threat landscape today , '' said Carl Herberger , vice president of security solutions at Radware , in a press release . `` Attackers employ an ever-increasing number of tactics to steal Attack.Databreach valuable information , from ransom attacks Attack.Ransom that can lock up a company 's data , to DDoS attacks that act as a smoke screen for information theft Attack.Databreach , to direct brute force or injection attacks that grant direct access Attack.Databreach to internal data . '' Despite the growth in attacks , some 40 % of organizations reported that they do not have an incident response plan in place , the survey found .