I have a url replacemnt issue which brings up a bogus virus alert. Can you help ?
At random times a url is being substituted for my home page url (my.xfinity.com). It brings up a bogus virus alert claiming to be from Microsoft, saying I should call a phone number (sorry, i didn't save the phone number). I have tried running Avast, Super Anti-Spyware and Malware Bytes scans but the 'alert' message eventually comes back again. The following urls were in history around the time of the last occurrence: http://security-risk-013x1aw04.stream/guest/?a=AZ&pagex=13&s1=eqYSONjvQrO9s5S968ebOughSbEInzy53HmFWTlYHNKB3eZnU8376Qjl0c-eZK8vMPW4DvCkoQKCNnmW7dKnWA%2C%2C&os=Windows&browser=Firefox&isp=Comcast%20Cable%20Communications%20inc.&ip=73.247.208.192 http://server2.cptrackswl.com/?a=AZ&pagex=13&s1=eqYSONjvQrO9s5S968ebOughSbEInzy53HmFWTlYHNKB3eZnU8376Qjl0c-eZK8vMPW4DvCkoQKCNnmW7dKnWA%2C%2C&os=Windows&browser=Firefox&isp=Comcast%20Cable%20Communications%20inc.&ip=73.247.208.192 http://9tevj.redirectvoluum.com/redirect?target=BASE64aHR0cDovL3NlcnZlcjIuY3B0cmFja3N3bC5jb20vP2E9QVomcGFnZXg9MTMmczE9ZXFZU09OanZRck85czVTOTY4ZWJPdWdoU2JFSW56eTUzSG1GV1RsWUhOS0IzZVpuVTgzNzZRamwwYy1lWks4dk1QVzREdkNrb1FLQ05ubVc3ZEtuV0ElMkMlMkMmb3M9V2luZG93cyZicm93c2VyPUZpcmVmb3gmaXNwPUNvbWNhc3QlMjBDYWJsZSUyMENvbW11bmljYXRpb25zJTIwaW5jLiZpcD03My4yNDcuMjA4LjE5Mg&ts=1501086425376&hash=SHnLNeTDkVOw2RF-YsftfMCSzDKb_mmqCLI4OD5jrcc&rm=DJ http://9tevj.voluumtrk.com/834e735f-85ea-4434-9e51-59b9535a84a9?eps=eqYSONjvQrO9s5S968ebOughSbEInzy53HmFWTlYHNKB3eZnU8376Qjl0c-eZK8vMPW4DvCkoQKCNnmW7dKnWA,,&F=*&G=&H=0.035 http://hotspeedmovewild.com/index40A.php?eps=eqYSONjvQrO9s5S968ebOughSbEInzy53HmFWTlYHNKB3eZnU8376Qjl0c-eZK8vMPW4DvCkoQKCNnmW7dKnWA,,&F=*&G=&H=0.035 https://publisherhub.plaimedia.com/nlp/index.php?subid=4444444&url=http://ypoha.voluumtrk.com/cb08dc7c-2774-4ee3-93d9-41bfa9ca05d8 https://volumtrk3.solidcpm.com/3318183.js?pubid=gumgum_11645&domain=my.xfinity.com&t=AwRZWkFeb3h1eWgFDkVCVEN2ZXd3aQYHRl9VXXt4c3t1ARcnJQ%3D%3D
Alla svar (2)
hi, this is often a scam tactic that we suspect is coming form "malvertising" (=ads placed on legitimate websites that redirect you to this fraudulent message), so using an adblocking addon like https://addons.mozilla.org/firefox/addon/ublock-origin/ would help with that.
But just to be sure,
Further information can be found in this article; https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-caused-malware?cache=no
Run most or all of the listed malware scanners. Each works differently. If one program misses something, another may pick it up.