A new MBR bootlocker called DiskWriter, or UselessDisk, has been discovered that overwrites the MBR of a victim's computer and then displays a ransom screen on reboot instead of booting into Windows. This ransom note asks for $300 in bitcoins in order to gain access to Windows again.
A new Chinese MBRLocker called DexLocker has been discovered that asks for 30 Yuan to get access to a computer. First discovered by security researcher JAMESWT, this ransomware will modify the master boot record of the victim's computer so that it shows a ransom note before Windows starts.
A new bootlocker ransomware called RedBoot will encrypt files on the computer, replace the MBR, or Master Boot Record, of the system drive and then appears to trash the partition table.
CounterStrike gamers looking for an advantage over their competition might be in for a surprise this Christmas, as there's a booby-trapped cheat tool going around that will overwrite their hard drive MBR (Master Boot Record) and prevent their computers from booting.