This one has been out there for a while but I just got another one of them. Looks like this and please delete it straight away:
Author Archives: XByte
Ransomware
New Australia Post Ransomware asking you to enter captcha codes:
Windows XP
On the 8th of April 2014, Microsoft will be discontinuing support and updates for Windows XP. The software will still continue to work, although there is a risk involved with using the machine if it is connected to your network. The risk stems from the fact that many security holes that have not been detected by Microsoft at the time of discontinued support CAN and WILL be exploited by hackers after this date, without the possibility of being detected and fixed.
It is for this reason that we must advise you to upgrade your Windows XP systems to a newer operating system as soon as possible.
Please do not hesitate to contact us to discuss your options.