Step onto any city street and you may find yourself subject to numerous forms of police surveillance—many imperceptible to the human eye.

A cruiser equipped with automated license plate readers (also known as ALPRs) may have just logged where you parked your car. A cell-site simulator may be capturing your cell-phone data incidentally while detectives track a suspect nearby. That speck in the sky may be a drone capturing video of your commute. Police might use face recognition...

Keeping Your Site Alive, our guide for keeping your site online amidst a DoS (denial of service) or DDoS (distributed denial of service) attack, now  has a new look and new advice. The guide, originally created and updated in conjunction with the Tactical Technology Collective, is aimed at human rights defenders, independent publications, and other administrators of small websites.

DDoS attacks are a common phenomena, used by a variety of actors, designed to temporarily or...

This week security researchers announced a newly discovered vulnerability dubbed KRACK, which affects several common security protocols for Wi-Fi, including WPA (Wireless Protected Access) and WPA2. This is a bad vulnerability in that it likely affects billions of devices, many of which are hard to patch and will remain vulnerable for a long time. Yet in light of the sometimes overblown media coverage, it’s important to keep the impact of KRACK in perspective: KRACK does not...