Tal Be'eryHi Meta, WhatsApp with Integrity?TL;DR: Meta’s WhatsApp suffers from an integrity issue that allows attackers to create an inconsistent world view on victims’ multi-device…6 min read·May 21, 2024----
Tal Be'eryinZengo WalletBad Randomness: Protecting Against Cryptography’s Perfect CrimeTL;DR: Black Hat Asia invited Zengo’s research team to present research on a critical but often overlooked vulnerability in cryptography…9 min read·May 8, 2024----
Tal Be'eryThe Ambassador protocol: Multi-device E2EE with PrivacyTL;DR: In this blog we present the ambassador protocol, our new cryptographic solution to enable End-to-End Encryption (E2EE) in the…14 min read·Mar 3, 2024----
Tal Be'eryUnnecessary Evil: Multi-Device Instant Messaging can be privateTL;DR: Contrary to Meta’s WhatsApp claims, it is possible to have an Instant Messaging service with End-to-End Encryption (E2EE) in the…4 min read·Jan 21, 2024----
Tal Be'eryHi Meta, WhatsApp with privacy?TL;DR: Meta’s WhatsApp suffers from a privacy issue that leaks victim devices’ setup information (mobile device + up to 4 linked devices)…7 min read·Jan 17, 2024--3--3
Tal Be'eryinZengo WalletBitcoin is a Dark Forest (too)TL;DR: Zengo researchers shed light on malicious bots monitoring the Bitcoin blockchain for bad randomness addresses, exploiting them…6 min read·Dec 5, 2023--3--3
Tal Be'eryinZengo WalletDo you know how keys are made?TL;DR: While problems with key generation have caused millions of crypto users to lose funds, Zengo wallet’s MPC technology solves the…11 min read·Nov 29, 2023----
Tal Be'eryA short note on AWS KEY IDAs I was playing with AWS authentication and authorization system, I had realized that most of its inner working and data structures are…3 min read·Oct 24, 2023--4--4
Tal Be'eryinZengo WalletVires in Numeris: Why adding more parties boosts securityWho can you really trust? This is the critical question to be asked. This question applies to most fields of life and especially to crypto…7 min read·Jun 24, 2023----
Tal Be'eryinZengo WalletFirmware Wallets: Sunlight is the best disinfectantOn Tuesday, May 16th, 2023, The Internet discovered that Ledger’s latest firmware update contained a “recovery” feature that allows a…5 min read·May 17, 2023----