cyberslacker
From Longman Business Dictionarycyberslackercy‧ber‧slack‧er /ˈsaɪbəˌslækə-bərˌslækər/ noun [countable] informalCOMPUTING an employee who spends a lot of time on the Internet doing activities that are not related to their job, for example shopping or emailing friendsCyberslackers go online to shop, play games, download music, communicate with friends, and maybe even look for another job.