encryption

The messaging app ArcaneChat is promoting itself as a more private alternative to Telegram, saying that unlike Telegram's opt-in secret chats, all its conversations — including groups and channels — are encrypted by default. It also highlights that it requires no phone number and claims to avoid spam and scammers, targeting users in Europe seeking more autonomy on Android.

Demonstrators gathered in Warsaw on 26 September to protest the European Parliament's 'Chat Control 1.0' legislation, which would require messaging platforms to scan private communications, including encrypted ones, for illegal content. Critics argue the measure undermines privacy and encryption, while supporters say it is needed to protect children. Protests against the proposal have been held across several European cities.

An encrypted Napoleonic-era military briefing, left unread for 217 years, has been decoded and published in a detailed writeup. The letter was addressed to Marshal Marmont, a French commander of the period. The decoding sheds light on wartime correspondence practices of the era, and the writeup has drawn attention among readers interested in cryptography and military history.

New analysis claims the cost of a quantum attack on Bitcoin's cryptography has been halved, with an estimate of 1,151 qubits now cited for 2026. The revised figure suggests quantum computers capable of breaking Bitcoin's encryption may arrive sooner or cheaper than previously assumed, reviving debate about how urgently the network should adopt quantum-resistant safeguards.