There have been rumours... I would like to confirm that there is a backdoor in many popular Hikvision products that makes it possible to gain full admin access to the device. Hikvision gets two weeks to come forward, acknowledge, and explain why the backdoor is there and when it is going to be removed. I sent them an email. If nothing changes, I will publish all details on March 20th, along with the firmware that disables the backdoor. It would be wise to disconnect your cameras from the Internet.