Thats one of the pros, using a mac ... Even though virus protection developers says that there are lots of viruses for mac also . ... to download a file from uploaded.net which is a thoroughly disagreeable website anyway. ... often- normally the download will complete and my antivirus will flash up and tell me the file is unsafe.... DAT files contain virus signatures and other information that McAfee anti-virus products use to protect your computer against existing and new potential threats