Security company Symantec <A HREF="http://zdnet.com.com/2100-1105_2-5266548.html?tag=zdnn.alert">has acquired antispam specialist TurnTide</A> for $28 million. TurnTide which was spun off only six months ago from ePrivacy Group, a privacy protection consultancy, has 20 employees, and sells a router-based technology that filters out unwanted email and viruses at the edge of corporate networks.