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.

When the IBM PC was new, I served as the president of the San Francisco PC User Group for three years. That’s how I met PCMag’s editorial team, who brought me on board in 1986. In the years since that ...

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 ...

When you upload your personal files to cloud storage services like Google Drive or OneDrive, you will find that the safety ...