Hackers capable of locking people out of homes and cars for payment of ransoms.
Governments are ill-prepared to combat the looming threat of "online murder" as cyber criminals exploit internet technology to target victims, the European policing agency warned.
In its most alarming assessment of the physical danger posed by online crime, Europol said it expected a rise in "injury and possible deaths" caused by computer attacks on critical safety equipment.
Police forensic techniques need to "adapt and grow" to address the dangers posed by the so-called "Internet of Everything" - a new era of technological interconnectedness in which everything from garage doors to hospital health systems will be linked and controlled through computer networks. The concept is behind the likely development of smart homes, cars and even cities, but police warned that the failure to protect devices properly could see them open to being hacked for money or to attack opponents.
The Europol threat assessment cited a report by US security firm IID that predicted the first murder via "hacked internet-connected device" by the end of this year. There have been no proven cases of murder by tampering with devices but hackers have highlighted numerous flaws in computer security systems.