dictionaryext.xyz
ThreatDown is now the name of the Malwarebytes line of business products. References to Malwarebytes below reflect the amazing technology used to first identify the threat.
Short bio
The domain dictionaryext.xyz is blocked because it is a search hijacker that delivers a forced Firefox extension. This potentially unwanted program (PUP) is forced on users because they are unable to leave the site until they have installed the extension.