MASHABLE — A new study from Trend Micro shows that more workers around the globe are using social networks while in the office and on the clock. The survey took a look at the habits of 1,600 Internet users from the U.S., UK, Germany and Japan and found that over the past two years alone, social web use in the workplace has risen from 19% to 24%. In Germany specifically, social media use at work saw a 10% increase. It’s still unclear whether this gradual but significant rise is being used to drive our businesses ahead, or if we’re instead wasting our companies’ time and money -- a distinction that’s especially important to managers concerned with network security and productivity issues...