off topic: how to block popup messages

["ed" <egarone@xxxxxxxxxxx>]

 Hi

 For the past two weeks, every day and sometimes twice a day I'm getting a
popup
 message that blackmails me to buy a software from www.messagedestroyer.net.
 I never received any other messages before this, nor from anyone else.

 This is coming to computer, where i'm running ts2000 with esignal and
 nothing else.
 I never used the browser on this computer and besides esignal there are no
 other programs with internet connections.
 I'll be very grateful for any help to block this messages.

 Thanks in advance

 Ed

ps:My previeus email with attached image of popup message didn't go thru.