- Arun Vishwanath: Estonia offers good example of how to boost cyber security
- He says a new system of authenticating users online could make a big difference in fighting hackers
Arun Vishwanath is an associate professor in the department of communication at the State University of New York at Buffalo. The views expressed are his own.
(CNN)Donald Trump had the audience at his rally in California on Thursday chanting "build that wall," a reference to his pledge to build one along America's southern border. But while this pledge might not be in the country's best interests, there is actually somewhere that we really could use a wall: cyberspace.