Italy moves to extradite Chinese national to the U.S. over hacking charges


Italy moves to extradite Chinese national to the U.S. over hacking charges

Pierluigi Paganini
April 27, 2026

Italy plans to extradite Xu Zewei to the U.S. over alleged hacks on COVID-19 research tied to state-backed operations.

Italy is moving to extradite Xu Zewei, the Chinese national arrested in 2025 at the request of U.S. authorities on cyber-espionage charges, Bloomberg reported.

The case stands out because it ties a single suspect, Xu, to cyber operations targeting sensitive research and major systems beyond the U.S. Authorities say he targeted universities and researchers working on COVID-19 vaccines, treatments, and testing between 2020 and 2021. Prosecutors also link him to a China state-backed hacking ecosystem, framing the activity as part of broader, politically motivated cyber operations.

In July 2025, Italian police arrested a Chinese national, Zewei Xu, at Milan’s Malpensa Airport on a U.S. warrant. Xu was arrested at Malpensa Airport on July 3rd after arriving on a flight from China. Authorities accused the man of cyberespionage, U.S. authorities linked him to the China-nexus group Hafnium (aka Silk Typhoon), which carried out attacks against U.S. government, including the US Treasury.

“Zewei Xu is wanted by the FBI for allegedly being part of a team of hackers that allegedly carried out espionage operations, particularly in 2020 on anti-COVID vaccines being produced at the University of Texas.” reported Italian news agency ANSA.

“Interior ministry documents said he is also accused of being part of a “large-scale cyber intrusion campaign orchestrated” by the Chinese government known as ‘Hafnium’, which “targeted thousands of computers around the world” to get information on “various U.S. government policies.”

The suspect’s family claims he is an innocent IT technician. His wife opposes his extradition, saying his Italian visa proves no wrongdoing and that he works as an IT manager at Shanghai GTA Semiconductor Ltd, developing systems and networks.

“Both my husband and I do not agree with extradition to the United States,” his wife told the Postal Police after the man’s arrest. “Him getting an entry visa to Italy should be a confirmation that we have not committed crimes, so I cannot understand the reason for my husband’s arrest.”

Italian police seized the documents and the devices of the suspect as requested by the U.S. authorities.

In broader terms, the Xu Zewei case shows how cyber espionage is increasingly handled through legal and diplomatic channels as well as technical defense. The extradition process is part of the response, but the deeper challenge is preventing these operations from succeeding in the first place. That means better patching, faster detection, stronger identity controls, and closer international coordination across Europe and the United States.

Follow me on Twitter: @securityaffairs and Facebook and Mastodon

Pierluigi Paganini

(SecurityAffairs – hacking, China)







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After being teased in the second beta, the new “Bubbles” feature is finally available in Android 17 Beta 3. This is the biggest change to Android multitasking since split-screen mode. I had to see how it worked—come along with me.

Now, it should be mentioned that this feature will probably look a bit familiar to Samsung Galaxy owners. One UI also allows for putting apps in floating windows, and they minimize into a floating widget. However, as you’ll see, Google’s approach is more restrained.

App Bubbles in Android 17

There’s a lot to like already

First and foremost, putting an app in a “Bubble” allows it to be used on top of whatever’s happening on the screen. The functionality is essentially identical to Android’s older feature of the exact same name, but now it can be used for apps in addition to messaging conversations.

To bubble an app, simply long-press the app icon anywhere you see it. That includes the home screen, app drawer, and the taskbar on foldables and tablets. Select “Bubble” or the small icon depicting a rectangle with an arrow pointing at a dot in the menu.

Bubbles on a phone screen

The app will immediately open in a floating window on top of your current activity. This is the full version of the app, and it works exactly how it would if you opened it normally. You can’t resize the app bubble, but on large-screen devices, you can choose which side it’s on. To minimize the bubble, simply tap outside of it or do the Home gesture—you won’t actually go to the Home Screen.

Multiple apps can be bubbled together—just repeat the process above—but only one can be shown at a time. This is a key difference compared to One UI’s pop-up windows, which can be resized and tiled anywhere on the screen. Here is also where things vary depending on the type of device you’re using.

If you’re using a phone, the current bubbled apps appear in a row of shortcuts above the window. Tap an app icon, and it will instantly come into view within the bubble. On foldables and tablets, the row of icons is much smaller and below the window.

Another difference is how the app bubbles are minimized. On phones, they live in a floating app icon (or stack of icons) on the edge of the screen. You are free to move this around the screen by dragging it. Tapping the minimized bubble will open the last active app in the bubble. On foldables and tablets, the bubble is minimized to the taskbar (if you have it enabled).

Bubbles on a foldable screen

Now, there are a few things to know about managing bubbles. First, tapping the “+” button in the shortcuts row shows previously dismissed bubbles—it’s not for adding a new app bubble. To dismiss an app bubble, you can drag the icon from the shortcuts row and drop it on the “X” that appears at the bottom of the screen.

To remove the entire bubble completely, simply drag it to the “X” at the bottom of the screen. On phones, there’s also an extra “Manage” button below the window with a “Dismiss bubble” option.

Better than split-screen?

Bubbles make sense on smaller screens

That’s pretty much all there is to it. As mentioned, there’s definitely not as much freedom with Bubbles as there is with pop-up windows in One UI. The latter allows you to treat apps like windows on a computer screen. Bubbles are a much more confined experience, but the benefit is that you don’t have to do any organizing.

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Of course, Android has supported using multiple apps at once with split-screen mode for a while. So, what’s the benefit of Bubbles? On phones, especially, split-screen mode makes apps so small that they’re not very useful.

If you’re making a grocery list while checking the store website, you’re stuck in a very small browser window. Bubbles enables you to essentially use two apps in full size at the same time—it’s even quicker than swiping the gesture bar to switch between apps.

If you’d like to give App Bubbles a try, enroll your qualified Pixel phone in the Android Beta Program. The final release of Android 17 is only a few months away (Q2 2026), but this is an exciting feature to check out right now.

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