I've had a dozen calls this morning from several people telling me that my laptop is being hacked and I've ignored the messages that Microsoft have sent me. This may be true, as I'm a complete technophobe and can't even find my account. They have given me the License no. of my laptop so I can check because apparently they are the only people to have it apart from me. They say they are going to block my computer because the hackers are using it to download child porn. I don't trust any of this and have refused to engage with them. Please can anyone let me know if this a known scam.