Manufacturers are warning that video surveillance systems commonly installed in businesses and family households are highly vulnerable to hacking if users do not adopt greater precautions with respect to password security.

The warnings come just after hackers managed to obtain illicit access to thousands of CCTV systems around the globe and live-stream their footage online via a Russia-based website. The site streamed footage from businesses and private homes in over 250 countries and regions, with its database displaying listings for a total of 4,591 cameras…