As searches of smartphones and other digital devices at US borders become more common, can research and computer science help protect travelers' privacy?
Saying they are is to dangerously misunderstand the limits of scientific enquiry.
Tech giant Microsoft wants to rid the world of "dumb" passwords to improve online security. But maybe it's the password itself we should dump.
Plans to introduce voice and facial recognition technology for online shopping and banking point to a password-free future.
No matter how many times people are warned to set strong secure passwords, many don't. So why do people take the risk? And is there anything else they can do to be more secure online?
South Africans are being targeted by cyber criminals. Consumers are fleeced because their passwords make them vulnerable.