There was a download of PC DoorGuard 4.2.0.35 on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. Commonly, this program's installer has the following filename: pdg.exe. We recommend checking the downloaded files with any free antivirus. The most popular versions of the program 4.2, 4 and 3.0. The actual developer of the software is Astonsoft. The software lies within Security Tools, more precisely Antivirus.
From the developer:
A very extensive and thorough intrusion scanner that scans any media on your PC for backdoors and trojan horses. PDG easily removes any found trojan with a click of a button, together with any elements it may have left in registry/system files/memory. PDG also constantly monitors your system to prevent further infection, using weekly updated trojan database consisting of more than 75000 entries.
You may want to check out more software, such as Bulletproof Public PC, Pc Optimizer 360 or Recover Mac Files on Windows PC, which might be similar to PC DoorGuard.
Network tools
Network tools