PrivSec Lab
Independent technical analysis on privacy and security
Fresh Speedometer 3.0, JetStream 2, and MotionMark numbers on iPhone 15 and 16 — normal mode vs Lockdown Mode. How WebKit's JIT evolved from iOS 16 to iOS 18 and where the trade-off stands today.
Practical threat modeling for indie devs, OSS maintainers, security researchers. EFF SSD + STRIDE adapted to your real assets.
PrivSec Lab pillar report on browser privacy in 2026: fingerprinting state-of-art, Lockdown Mode evolution, browser comparison matrix, DNS hardening, extensions and OS hooks.
In-depth comparison of self-hosted email (Mailcow/Docker), ProtonMail, and Fastmail across encryption, jurisdiction, price, TCO, and daily UX in 2026. Numbers, not opinions.
PrivSec Lab technical audit of Safari's anti-tracking stack in 2026: ITP 24 h cookie caps, iCloud Private Relay double-hop limits, Storage Partitioning gaps, and a head-to-head against Brave and Firefox RFP.
PrivSec Lab COMP breakdown of the four serious privacy browsers in 2026: fingerprint defense, Tor mode, telemetry, and which one fits your threat model.
PrivSec Lab deep-dive comparing Bitwarden CLI, 1Password CLI, pass, and gopass for developers in 2026. Encryption specs, CI/CD integration, SSH agent, team workflows, and pricing.
How to test your real exposure: DNS leaks, WebRTC STUN reveals, IPv6 fallback. Reproducible protocol for tech-aware users.
Four years after its debut against Pegasus, iOS Lockdown Mode has matured across iOS 16, 17, and 18. We track every change, measure 2026 performance on WebKit 18.x, and tell you exactly who should enable it.
PrivSec Lab deep-dive into DNS-over-HTTPS implementations in 2026: Cloudflare 1.1.1.1, NextDNS, Quad9, and self-hosted resolvers compared on jurisdiction, protocols, logging, and censorship bypass.
PrivSec Lab deep-dive: every active and passive fingerprinting vector in 2026, entropy measurements from a 28k-user panel, state-of-the-art defenses, and a decision matrix to pick the right browser for your threat model.
No-sponsorship benchmark of ProtonVPN, Mullvad and IVPN for 2026. Audits, jurisdiction, anonymous payments, multi-hop, kill switch — only hard criteria matter.
iOS 16 Lockdown Mode disables JIT JavaScript compilation in Safari. Benchmarks on an iPhone 13 mini show a 95% Octane drop and 65% Speedometer hit — with 12 web APIs blocked.
The reMarkable tablet runs a full Linux system with SSH access enabled by default. Here is how to install custom packages via Toltec and opkg to unlock over 1500 additional apps.
Bookmarklets are JavaScript snippets saved as browser bookmarks. This guide covers how to create, share, and use them across Safari, Firefox, and Chromium-based browsers.