Signal used to have one hard rule: your messages lived on your device and nowhere else. Lose the phone, lose the history. That changed. Signal Secure Backups are now live on Android and iOS. They are end-to-end encrypted, opt-in, and Signal cannot read them. If your Signal threads touch treasury approvals, deployment coordination or incident response, this is worth ten minutes of your attention. Setup takes five.
Ask where the biggest crypto losses actually come from, and it's rarely a flaw in the smart contract code. It's usually a hijacked domain, a compromised signer, a treasury transaction that looked routine, a support account that got phished, a deploy key sitting in the wrong place. The biggest hacks of the past few years went around the contract instead of breaking it. Operational failures are
North Korea's fake IT workers have infiltrated hundreds of companies. How the DPRK scheme works, how big it is and how they are using American facilitators to grow even bigger
Behind every great security conference is a group of people reading through hundreds of submissions, looking for the talks that will teach the audience something real. At the DeFi Security Summit, that work runs through the Review Committee, which reads every talk and workshop proposal and helps the strongest, most useful research find its way to the stage. It's quiet, detailed work, and it's a big
You think you're smart enough to spot any scam? Good. We built something to check. 99% of stolen funds in Web3 today are not smart contract hacks anymore, they're Operational Security issues: social engineering, fake job interviews, malicious Zoom calls. Most Web3 hacks don't start onchain, they start on someone's laptop. The Bybit hack ($1.4bn) started with a developer getting social
When you set up a YubiKey, you get two main options: register it as a security key, or save a passkey on it. Both are phishing-resistant, both use the same crypto under the hood. So what's the actual difference, and which one should you use? This article breaks down what each mode is, what it does inside your authentication flow, and which setup is the strongest. If
The crypto industry has gotten better at auditing code. But the devices the code runs on are still underprotected. A compromised device is the cleanest path to a compromised key. If the device signing transactions or holding seeds hasn't installed its security updates, is sending out data it doesn't need to, has more services running than it actually uses, or was never properly cleaned, none of
We're proud to share that Opsek's founder, Pablo Sabbatella, has been elected to the Arbitrum Security Council. Pablo is one of the six members chosen by the Arbitrum DAO community in the March 2026 election. The Security Council is a 12-member body elected by the Arbitrum DAO, responsible for managing risk across the Arbitrum ecosystem. In practice, that means making time-sensitive decisions to protect
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