According to surveys, company employees spend up to 30% of their working hours on private affairs. Many personal blogs, entertainment sites, file sharing services, torrent trackers, and files downloaded from them are infected. Cybercriminals are actively using social networking sites for phishing and distribution of malware. It is clear that by communicating on social networks from the office computer, employees may unwittingly help hackers penetrate the corporate network. Unfortunately, there is currently no technology that can eliminate human error from corporate network security.”]
Source: https://securelist.com/security-policies-misuse-of-resources/35945/