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Chinese national arrested in Italy over Covid research hack: What we know so far

The man, identified as Xu Zewei, was detained last week at Milan’s Malpensa airport after arriving in Italy.

July 10, 2025 / 16:47 IST
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A 33-year-old Chinese man from Shanghai has been arrested in Italy on allegations of industrial espionage connected to a US investigation into cyberattacks on Covid-19 research facilities, Reuters reported. The man, identified as Xu Zewei, was detained last week at Milan’s Malpensa airport after arriving in Italy.

He was apprehended on a US arrest warrant issued as part of an ongoing FBI probe. Zewei, however, has denied all allegations against him, claiming he is the victim of mistaken identity.

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What are the allegations?

According to US authorities, Zewei was allegedly part of a group that in 2020 hacked into networks associated with US-based universities, immunologists, and virologists involved in Covid-19 research. The hackers are accused of targeting efforts related to testing, treatment, and vaccine development, including breaching a research university in the Southern District of Texas.

COVID-19 Vaccine
Frequently Asked Questions

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How does a vaccine work?

A vaccine works by mimicking a natural infection. A vaccine not only induces immune response to protect people from any future COVID-19 infection, but also helps quickly build herd immunity to put an end to the pandemic. Herd immunity occurs when a sufficient percentage of a population becomes immune to a disease, making the spread of disease from person to person unlikely. The good news is that SARS-CoV-2 virus has been fairly stable, which increases the viability of a vaccine.

How many types of vaccines are there?

There are broadly four types of vaccine — one, a vaccine based on the whole virus (this could be either inactivated, or an attenuated [weakened] virus vaccine); two, a non-replicating viral vector vaccine that uses a benign virus as vector that carries the antigen of SARS-CoV; three, nucleic-acid vaccines that have genetic material like DNA and RNA of antigens like spike protein given to a person, helping human cells decode genetic material and produce the vaccine; and four, protein subunit vaccine wherein the recombinant proteins of SARS-COV-2 along with an adjuvant (booster) is given as a vaccine.

What does it take to develop a vaccine of this kind?

Vaccine development is a long, complex process. Unlike drugs that are given to people with a diseased, vaccines are given to healthy people and also vulnerable sections such as children, pregnant women and the elderly. So rigorous tests are compulsory. History says that the fastest time it took to develop a vaccine is five years, but it usually takes double or sometimes triple that time.
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