yeah my guess would be a Trojan of some sort.
The other day i got this Virus-pop up that Locked my computer, posed a screen saying it was the FBI and was pretty much holding my computer hostage wanting to Extort money from me to unlock it.
Luckily I knew how to counter it and fixed/cleansed my computer of this garbage. All the advice i can suggest is having full knowledge of your computers contents is really important. If you have people that use your computer as well, it'd be nice to keep tabs on where they go exactly and for how long/etc. I looked into anything reguarding Al jazeera but found nothing. It's gotta be something else