Arpokrat Blog

Insights on privacy, cryptography, and the future of secure communications.

Recent Articles

5G, Location Data and the Law's Targeting Error

5G, Location Data and the Law's Targeting Error

In 2011, Detroit police asked a mobile operator for the cell site records of Timothy Carpenter’s phone. …

Cold wallet: the complete guide, from a scrap of paper to multisig on Qubes OS

Cold wallet: the complete guide, from a scrap of paper to multisig on Qubes OS

In 2023, researchers at Kaspersky took apart a Trezor hardware wallet bought from a respectable-looking online …

Permanent geolocation: how your phone tracks you even when you think you have stopped it

Permanent geolocation: how your phone tracks you even when you think you have stopped it

In 2024, two researchers at the University of Maryland repeatedly queried Apple’s Wi-Fi positioning …

The Time Bomb: Harvest Now, Decrypt Later and the Zero-Knowledge Imperative

The Time Bomb: Harvest Now, Decrypt Later and the Zero-Knowledge Imperative

The dependence of European governments on American cloud infrastructure poses more than just an immediate …

AI and Legal Privilege: The Third Party You Cannot Sue

AI and Legal Privilege: The Third Party You Cannot Sue

When the FBI seized the devices of Bradley Heppner, a company executive charged with securities fraud, agents …

5G, Location Data and the Law's Targeting Error

5G, Location Data and the Law's Targeting Error

In 2011, Detroit police asked a mobile operator for the cell site records of Timothy Carpenter’s phone. …

Permanent geolocation: how your phone tracks you even when you think you have stopped it

Permanent geolocation: how your phone tracks you even when you think you have stopped it

In 2024, two researchers at the University of Maryland repeatedly queried Apple’s Wi-Fi positioning …

AI and Legal Privilege: The Third Party You Cannot Sue

AI and Legal Privilege: The Third Party You Cannot Sue

When the FBI seized the devices of Bradley Heppner, a company executive charged with securities fraud, agents …

5G, Location Data and the Law's Targeting Error

5G, Location Data and the Law's Targeting Error

In 2011, Detroit police asked a mobile operator for the cell site records of Timothy Carpenter’s phone. …

Data Act vs CLOUD Act: who really controls your data in the cloud?

Data Act vs CLOUD Act: who really controls your data in the cloud?

For years, the world operated on a simple assumption: data has a physical place of residence. If it was stored …

Cold wallet: the complete guide, from a scrap of paper to multisig on Qubes OS

Cold wallet: the complete guide, from a scrap of paper to multisig on Qubes OS

In 2023, researchers at Kaspersky took apart a Trezor hardware wallet bought from a respectable-looking online …

Which operating system for your security and privacy? Windows, macOS, Linux, Tails, Whonix and Qubes OS compared

Which operating system for your security and privacy? Windows, macOS, Linux, Tails, Whonix and Qubes OS compared

Choosing an operating system is not merely a matter of interface preference or software compatibility. It is …

Anonymous blockchains: how Monero, Zcash, and privacy coins really protect your transactions

Anonymous blockchains: how Monero, Zcash, and privacy coins really protect your transactions

Bitcoin was never anonymous. This is one of the most persistent — and most dangerous — misconceptions in the …

Arpokrat Swap: exchange your cryptocurrencies without leaving a trace

Arpokrat Swap: exchange your cryptocurrencies without leaving a trace

We believe that the act of exchanging value should not leave a trace. Today, we make that belief a reality …