SINGAPORE – Lim Meng Liang, 38, spends most of his time solving the impossible. As a specialist in Diophantine equations – notoriously complex mathematical problems famous for having no solutions – ...

If you’ve read anything about technology in the last few years, you may have seen the term “encryption” floating around. It’s a simple concept, but the realities of its use are enormously complicated.

Using a VPN, or virtual private network, is one of the best ways to protect your online privacy. We review dozens every year, and these are the top VPNs we've tested. I’ve been writing about ...

File syncing and storage platforms, also known as cloud storage services, offer major convenience. They let you back up and access your data—documents, photos, video, and other file types—on any ...