Kaspersky Lab and B2B International conducted a survey among IT professionals working for large and medium-sized businesses. The most common threats faced by IT specialists are malicious programs, spam, phishing, network intrusions and targeted attacks. Internal threats can be just as dangerous as external threats: the most common internal threat is software vulnerabilities, followed by data leaks due to the actions of staff or loss/theft of a device. 67% of respondents cited anti-malware as the main protection against cyber-threats.
Source: https://thehackernews.com/2012/10/cyber-threats-major-risk-to-business.html