Norton VPN review: A VPN that fails to meet Norton's standards

One thing I need to make clear right from the start: this is a review of Norton VPN (formerly Norton Secure VPN, and briefly Norton Ultra VPN) as a standalone app, not of the VPN feature in the Norton [...]

Surfshark VPN review: A fast VPN for casual users

Surfshark is one of the youngest major VPNs, but it's grown rapidly over the last seven years. Since 2018, it's expanded its network to 100 countries, added a suite of apps to its Surfshark [...]

Private Internet Access VPN review: Both more and less than a budget VPN

I came into this review thinking of Private Internet Access (PIA) as one of the better VPNs. It's in the Kape Technologies portfolio, along with the top-tier ExpressVPN and the generally reliable [...]

NordVPN Review 2025: Innovative features, a few missteps

When we say that NordVPN is a good VPN that's not quite great, it's important to put that in perspective. Building a good VPN is hard, as evidenced by all the shovelware VPNs flooding the ma [...]

How we test VPNs

VPN users have an unbelievable amount of choice in the market, but lots of those choices are bad. Upwards of 180 virtual private networks are available for commercial users alone. For the casual user [...]

CyberGhost VPN review: Despite its flaws, the value is hard to beat

CyberGhost is the middle child of the Kape Technologies VPN portfolio, but in quality, it's much closer to ExpressVPN than Private Internet Access. I mainly put it on my best VPN list because it& [...]

Train-to-Test scaling explained: How to optimize your end-to-end AI compute budget for inference

The standard guidelines for building large language models (LLMs) optimize only for training costs and ignore inference costs. This poses a challenge for real-world applications that use inference-tim [...]

ExpressVPN review 2025: Fast speeds and a low learning curve

ExpressVPN is good at its job. It's easy to be skeptical of any service with a knack for self-promotion, but don't let ExpressVPN's hype distract you from the fact that it keeps its fro [...]

Paid antivirus vs free antivirus: which should you get?

We examine the factors that determine whether you’d be better off with a paid or free antivirus app. [...]