Why TikTok's Security Risks Keep Raising Fears

The TikTok app logo is seen in this illustration taken, August 22, 2022. (Reuters)
The TikTok app logo is seen in this illustration taken, August 22, 2022. (Reuters)
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Why TikTok's Security Risks Keep Raising Fears

The TikTok app logo is seen in this illustration taken, August 22, 2022. (Reuters)
The TikTok app logo is seen in this illustration taken, August 22, 2022. (Reuters)

TikTok is once again fending off claims that its Chinese parent company, ByteDance, would share user data from its popular video-sharing app with the Chinese government, or push propaganda and misinformation on its behalf.

China’s Foreign Ministry on Wednesday accused the United States itself of spreading disinformation about TikTok's potential security risks following a report in the Wall Street Journal that the Committee on Foreign Investment in the US — part of the Treasury Department — was threatening a US ban on the app unless its Chinese owners divest their stake, The Associated Press said.

So are the data security risks real? And should users be worried that the TikTok app will be wiped off their phones?

Here’s what to know:

WHAT ARE THE CONCERNS ABOUT TIKTOK?

Both the FBI and the Federal Communications Commission have warned that ByteDance could share TikTok user data — such as browsing history, location and biometric identifiers — with China’s authoritarian government.

A law implemented by China in 2017 requires companies to give the government any personal data relevant to the country’s national security. There’s no evidence that TikTok has turned over such data, but fears abound due to the vast amount of user data it, like other social media companies, collects.

Concerns around TikTok were heightened in December when ByteDance said it fired four employees who accessed data on two journalists from Buzzfeed News and The Financial Times while attempting to track down the source of a leaked report about the company.

HOW IS THE US RESPONDING?

White House National Security Council spokesperson John Kirby declined to comment when asked Thursday to address the Chinese foreign ministry's comments about TikTok, citing the review being conducted by the Committee on Foreign Investment.

Kirby also could not confirm that the administration sent TikTok a letter warning that the US government may ban the application if its Chinese owners don’t sell its stake but added, “we have legitimate national security concerns with respect to data integrity that we need to observe.”

In 2020, then-President Donald Trump and his administration sought to force ByteDance to sell off its US assets and ban TikTok from app stores. Courts blocked the effort, and President Joe Biden rescinded Trump’s orders but ordered an in-depth study of the issue. A planned sale of TikTok’s US assets was also shelved as the Biden administration negotiated a deal with TikTok that would address some of the national security concerns.

In Congress, US Sens. Richard Blumenthal and Jerry Moran, a Democrat and a Republican, wrote a letter in February to Treasury Secretary Janet Yellen urging the Committee on Foreign Investment panel, which she chairs, to “swiftly conclude its investigation and impose strict structural restrictions” between TikTok's American operations and ByteDance, including potentially separating the companies.

At the same time, lawmakers have introduced measures that would expand the Biden administration's authority to enact a national ban on TikTok. The White House has already backed a Senate proposal that has bipartisan support.

HOW HAS TIKTOK ALREADY BEEN RESTRICTED?

On Thursday, British authorities said they are banning TikTok on government-issued phones on security grounds, following similar moves by the European Union’s executive branch, which temporarily banned TikTok from employee phones. Denmark and Canada have also announced efforts to block it on government-issued phones.

Last month, the White House said it would give US federal agencies 30 days to delete TikTok from all government-issued mobile devices. Congress, the US armed forces and more than half of US states had already banned the app.

WHAT DOES TIKTOK SAY?

TikTok spokesperson Maureen Shanahan said the company was already answering security concerns through “transparent, US-based protection of US user data and systems, with robust third-party monitoring, vetting, and verification.”

In June, TikTok said it would route all data from US users to servers controlled by Oracle, the Silicon Valley company it chose as its US tech partner in 2020 in an effort to avoid a nationwide ban. But it is storing backups of the data in its own servers in the US and Singapore. The company said it expects to delete US user data from its own servers, but it has not provided a timeline as to when that would occur.

TikTok CEO Shou Zi Chew is set to testify next week before the House Energy and Commerce Committee about the company’s privacy and data-security practices, as well as its relationship with the Chinese government.

Meanwhile, TikTok’s parent company ByteDance has been trying to position itself as more of an international company -- and less of a Chinese company that was founded in Beijing in 2012 by its current chief executive Liang Rubo and others.

Theo Bertram, TikTok’s vice president of policy in Europe, said in a Tweet Thursday that ByteDance “is not a Chinese company.” Bertram said its ownership consists of 60% by global investors, 20% employees and 20% founders. Its leaders are based in cities like Singapore, New York, Beijing and other metropolitan areas.

ARE THE SECURITY RISKS LEGITIMATE?

It depends on who you ask.

Some tech privacy advocates say while the potential abuse of privacy by the Chinese government is concerning, other tech companies have data-harvesting business practices that also exploit user information.

“If policy makers want to protect Americans from surveillance, they should advocate for a basic privacy law that bans all companies from collecting so much sensitive data about us in the first place, rather than engaging in what amounts to xenophobic showboating that does exactly nothing to protect anyone,” said Evan Greer, director of the nonprofit advocacy group Fight for the Future.

Karim Farhat, a researcher with the Internet Governance Project at Georgia Tech, said a TikTok sale would be “completely irrelevant to any of the alleged ‘national security’ threats” and go against “every free market principle and norm” of the state department’s internet freedom principles.

Others say there is legitimate reason for concern.

People who use TikTok might think they’re not doing anything that would be of interest to a foreign government, but that’s not always the case, said Anton Dahbura, executive director of the Johns Hopkins University Information Security Institute. Important information about the United States is not strictly limited to nuclear power plants or military facilities; it extends to other sectors, such as food processing, the finance industry and universities, Dahbura said.

IS THERE PRECEDENCE FOR BANNING TECH COMPANIES?

Last year, the US banned the sale of communications equipment made by Chinese companies Huawei and ZTE, citing risks to national security. But banning the sale of items could be more easily done than banning an app, which is accessed through the web.

Such a move might also go to the courts on grounds that it might violate the First Amendment as some civil liberties groups have argued.



New Process for Stable, Long-Lasting Batteries

The image shows a test cell used to fabricate and test the all-solid-state battery developed at PSI. (Paul Scherrer Institute PSI/Mahir Dzambegovic) 
The image shows a test cell used to fabricate and test the all-solid-state battery developed at PSI. (Paul Scherrer Institute PSI/Mahir Dzambegovic) 
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New Process for Stable, Long-Lasting Batteries

The image shows a test cell used to fabricate and test the all-solid-state battery developed at PSI. (Paul Scherrer Institute PSI/Mahir Dzambegovic) 
The image shows a test cell used to fabricate and test the all-solid-state battery developed at PSI. (Paul Scherrer Institute PSI/Mahir Dzambegovic) 

Researchers at the Paul Scherrer Institute PSI have achieved a breakthrough on the path to practical application of lithium metal all-solid-state batteries.

The team expects the next generation of batteries to store more energy, are safer to operate, and charge faster than conventional lithium-ion batteries.

The team has reported these results in the journal Advanced Science.

All-solid-state batteries are considered a promising solution for electromobility, mobile electronics, and stationary energy storage – in part because they do not require flammable liquid electrolytes and therefore are inherently safer than conventional lithium-ion batteries.

Two key problems, however, stand in the way of market readiness: On the one hand, the formation of lithium dendrites at the anode remains a critical point.

On the other hand, an electrochemical instability – at the interface between the lithium metal anode and the solid electrolyte – can impair the battery’s long-term performance and reliability.

To overcome these two obstacles, the team led by Mario El Kazzi, head of the Battery Materials and Diagnostics group at the Paul Scherrer Institute PSI, developed a new production process:

“We combined two approaches that, together, both densify the electrolyte and stabilize the interface with the lithium,” the scientist explained.

Central to the PSI study is the argyrodite type LPSCl, a sulphide-based solid electrolyte made of lithium, phosphorus, and sulphur. The mineral exhibits high lithium-ion conductivity, enabling rapid ion transport within the battery – a crucial prerequisite for high performance and efficient charging processes.

To densify argyrodite into a homogeneous electrolyte, El Kazzi and his team did incorporate the temperature factor, but in a more careful way: Instead of the classic sintering process, they chose a gentler approach in which the mineral was compressed under moderate pressure and at a moderate temperature of only about 80 degrees Celsius.

The result is a compact, dense microstructure resistant to the penetration of lithium dendrites. Already, in this form, the solid electrolyte is ideally suited for rapid lithium-ion transport.

To ensure reliable operation even at high current densities, such as those encountered during rapid charging and discharging, the all-solid-state cell required further modification.

For this purpose, a coating of lithium fluoride (LiF), only 65 nanometres thick, was evaporated under vacuum and applied uniformly to the lithium surface – serving as a ultra-thin passivation layer at the interface between the anode and the solid electrolyte.

In laboratory tests with button cells, the battery demonstrated extraordinary performance under demanding conditions.

“Its cycle stability at high voltage was remarkable,” said doctoral candidate Jinsong Zhang, lead author of the study.

After 1,500 charge and discharge cycles, the cell still retained approximately 75% of its original capacity.

This means that three-quarters of the lithium ions were still migrating from the cathode to the anode. “An outstanding result. These values are among the best reported to date.”

Zhang therefore sees a good chance that all-solid-state batteries could soon surpass conventional lithium-ion batteries with liquid electrolyte in terms of energy density and durability.

Thus El Kazzi and his team have demonstrated for the first time that the combination of solid electrolyte mild sintering and a thin passivation layer on lithium anode effectively suppresses both dendrite formation and interfacial instability.

This combined solution marks an important advance for all-solid-state battery research – not least because it offers ecological and economic advantages: Due to the low temperatures, the process saves energy and therefore costs.

“Our approach is a practical solution for the industrial production of argyrodite-based all-solid-state batteries,” said El Kazzi. “A few more adjustments – and we could get started.”


Meta Urges Australia to Change Teen Social Media Ban

Meta has called for Australia's social media for under-16s to target app stores. Saeed KHAN / AFP
Meta has called for Australia's social media for under-16s to target app stores. Saeed KHAN / AFP
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Meta Urges Australia to Change Teen Social Media Ban

Meta has called for Australia's social media for under-16s to target app stores. Saeed KHAN / AFP
Meta has called for Australia's social media for under-16s to target app stores. Saeed KHAN / AFP

Tech giant Meta urged Australia on Monday to rethink its world-first social media ban for under-16s, while reporting that it has blocked more than 544,000 accounts under the new law.

Australia has required big platforms including Meta, TikTok and YouTube to stop underage users from holding accounts since the legislation came into force on December 10 last year.

Companies face fines of Aus $49.5 million (US$33 million) if they fail to take "reasonable steps" to comply.

Billionaire Mark Zuckerberg's Meta said it had removed 331,000 underage accounts from Instagram, 173,000 from Facebook, and 40,000 from Threads in the week to December 11.

The company said it was committed to complying with the law.

"That said, we call on the Australian government to engage with industry constructively to find a better way forward, such as incentivizing all of industry to raise the standard in providing safe, privacy-preserving, age appropriate experiences online, instead of blanket bans," it said in statement.

Meta renewed an earlier call for app stores to be required to verify people's ages and get parental approval before under-16s can download an app.

This was the only way to avoid a "whack-a-mole" race to stop teens migrating to new apps to avoid the ban, the company said.

The government said it was holding social media companies to account for the harm they cause young Australians.

"Platforms like Meta collect a huge amount of data on their users for commercial purposes. They can and must use that information to comply with Australian law and ensure people under 16 are not on their platforms," a government spokesperson said.

Meta said parents and experts were worried about the ban isolating young people from online communities, and driving some to less regulated apps and darker corners of the internet.

Initial impacts of the legislation "suggest it is not meeting its objectives of increasing the safety and well-being of young Australians", it said.

While raising concern over the lack of an industry standard for determining age online, Meta said its compliance with the Australian law would be a "multilayered process".

Since the ban, the California-based firm said it had helped found the OpenAge Initiative, a non-profit group that has launched age-verification tools called AgeKeys to be used with participating platforms.


China Is Closing in on US Technology Lead Despite Constraints, AI Researchers Say

 Visitors look at robots on display at robotics company Unitree's first retail store in Beijing in January 9, 2026. (AFP)
Visitors look at robots on display at robotics company Unitree's first retail store in Beijing in January 9, 2026. (AFP)
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China Is Closing in on US Technology Lead Despite Constraints, AI Researchers Say

 Visitors look at robots on display at robotics company Unitree's first retail store in Beijing in January 9, 2026. (AFP)
Visitors look at robots on display at robotics company Unitree's first retail store in Beijing in January 9, 2026. (AFP)

China can narrow its technological gap with the US driven by growing risk-taking and innovation, though the lack of advanced chipmaking tools is hobbling the sector, the country's leading artificial intelligence researchers said on Saturday.

China's so-called "AI tiger" startups MiniMax and Zhipu AI had strong debuts on the Hong Kong Stock Exchange this week, reflecting growing confidence in the sector as Beijing fast-tracks AI and chip listings to bolster domestic alternatives to advanced US technology.

Yao Shunyu, a former senior researcher at ChatGPT maker OpenAI ‌who was named ‌technology giant Tencent's chief AI scientist in December, ‌said ⁠there was a ‌high likelihood of a Chinese firm becoming the world's leading AI company in the next three to five years but said the lack of advanced chipmaking machines was the main technical hurdle.

"Currently, we have a significant advantage in electricity and infrastructure. The main bottlenecks are production capacity, including lithography machines, and the software ecosystem," Yao said at an AI conference in Beijing.

China has completed a working prototype of an extreme-ultraviolet lithography ⁠machine potentially capable of producing cutting-edge semiconductor chips that rival the West's, Reuters reported last month. However, the ‌machine has not yet produced working chips and may ‍not do so until 2030, people with ‍knowledge of the matter told Reuters.

MIND THE INVESTMENT GAP

Yao and other ‍Chinese industry leaders at the Beijing conference on Saturday also acknowledged that the US maintains an advantage in computing power due to its hefty investments in infrastructure.

"The US computer infrastructure is likely one to two orders of magnitude larger than ours. But I see that whether it's OpenAI or other platforms, they're investing heavily in next-generation research," said Lin Junyang, technical lead for Alibaba's flagship Qwen large language model.

"We, ⁠on the other hand, are relatively strapped for cash; delivery alone likely consumes the majority of our computer infrastructure," Lin said during a panel discussion at the AGI-Next Frontier Summit held by the Beijing Key Laboratory of Foundational Models at Tsinghua University.

Lin said China's limited resources have spurred its researchers to be innovative, particularly through algorithm-hardware co-design, which enables AI firms to run large models on smaller, inexpensive hardware.

Tang Jie, founder of Zhipu AI which raised HK$4.35 billion in its IPO, also highlighted the willingness of younger Chinese AI entrepreneurs to embrace high-risk ventures - a trait traditionally associated with Silicon Valley - as a positive development.

"I think if we can improve this environment, ‌allowing more time for these risk-taking, intelligent individuals to engage in innovative endeavors ... this is something our government and the country can help improve," said Tang.