Extension Security | Breaking Cybersecurity News | The Hacker News

Researchers at KU Leuven tested 85 of the most popular crypto wallets that run as browser extensions and found that the wallets themselves leak enough to link and track the people using them. The way these wallets talk to websites and blockchain servers can tie a person's separate addresses together and let outsiders follow them from site to site. And on a site that already holds a name or email, the same leaks can put a real name to an "anonymous" crypto identity. This is not a hack. The wallets behave exactly as they were built to. The 85 extensions together have about 35 million users listed on the Chrome Web Store. The team, from the university's DistriNet security group,  posted the paper  this month and will present it at the PETS 2026 privacy conference in Calgary in late July. They ran real wallets against real Web3 sites and mapped out five privacy weaknesses in how wallets and websites interact. When they reported the most far-reaching one to the wa...

Researchers found a flaw in  Opera GX , the gaming-focused version of the Opera browser, that let a malicious website silently install a browser add-on and use it to lift specific data from the pages a victim visits. In a proof of concept, they reconstructed a signed-in user's full Gmail address from a single visit, with no click. Opera has patched the flaw and says it found no evidence that it was ever used in the wild. The fix shipped in Opera GX version 130.0.5847.89, so anyone on a current build is already covered; you can confirm yours at opera://about. There is no CVE. Because the attack needed no clicks or approvals, there was no workaround short of the patch. Opera's bug bounty team rated the issue P1, its top severity, and paid the maximum $5,000 award for a critical bug. How the attack works GX Mods let you reskin Opera GX with custom sounds, themes, wallpapers, and CSS that restyles the sites you visit. They ship as .crx files, like browser...

Cybersecurity researchers have disclosed a one-click attack via Microsoft Visual Studio Code (VS Code) that makes it possible to steal a user's GitHub token. "Just by clicking a link, it's possible for an attacker to steal a GitHub token that can read and write to your repos, including private ones," security researcher Ammar Askar said . GitHub supports a feature called GitHub.dev that runs as a lightweight web-based source code editor in the web browser's sandbox by launching a VS Code environment. It allows users to send pull requests and make commits. "This functionality is achieved by github.com POSTing over an OAuth token to github.dev that allows it to interact with GitHub on your behalf," Askar said. "The token is not scoped to the particular repo you interacted with, meaning it has full access to every other repo that you have access to." In a nutshell, the vulnerability allows attackers to install malicious VS Code extensio...