HONG KONG – The US push to ban TikTok marks a new phase in its approach to data security that could eventually impact everything from electric vehicles (EVs) to healthcare, reshaping trade relations between the world’s biggest economies.

US President Joe Biden last week signed legislation barring Chinese parent ByteDance’s ownership of TikTok, a move aimed at preventing Beijing from accessing troves of data that the video-sharing app collects from its 170 million American users.

The law takes a page out of China’s playbook, viewing the potential misuse of data as a national security threat.

Although Beijing has long adopted far more restrictions on US companies in China, the authorities have embraced firms that play by its rules and agree to store data locally.

Mr Elon Musk’s Tesla is a prime example: Bloomberg reported on April 29 that it will partner with Chinese tech giant Baidu for mapping and navigation functions to deploy autonomous driving features – data entrusted only to a select group of Chinese companies.

The US now appears to be moving “away from an open internet with unrestricted data flows and towards selected fragmentation based on national security concerns”, said Ms Caitlin Chin-Rothmann, a fellow at the Centre for Strategic and International Studies.

“While TikTok is currently in the hot seat in part due to its enormous popularity and the scope of its data collection, it is not the first and will not be the last Chinese company that US lawmakers target,” she said.

“It would seem that tech decoupling – or at least reducing dependence on the other – is becoming increasingly popular among both parties.”

Data security is again taking centre stage in the intensifying rivalry between the US and China as Mr Biden faces a rematch in November with Donald Trump, whose administration sought to block countries from buying Huawei Technologies equipment for 5G networks. Later, Trump proposed a “Clean Network” to prevent Beijing from accessing sensitive personal data of Americans.

While Mr Biden has not gone that far, the clash over data has picked up in recent months.

China has been using its 2021 data security law to step up supervision of sectors from agriculture to geography, and the US is raising concerns over logistics networks, autonomous driving and drones. Further restrictions risk carving up parts of the global economy.

“It’s not clear where it ends, unless you want China to proverbially roll over and crawl into a corner, and obviously that’s not going to happen,” said Dr Rogier Creemers, an assistant professor at the University of Leiden who researches China tech policy.

“As long as risk exists, there’s always a reason to say we have not de-risked enough, so we need to de-risk more.”

AI era

New technology is creating new risks. Modern devices are becoming ever smarter, gaining unprecedented abilities to generate and transmit data.

Cars collect information on drivers and passengers, while medical devices can parse and process personal healthcare intelligence. Washing machines, port cranes and even clothes connect to some sort of remote server. The artificial intelligence (AI) era promises only to magnify those capabilities.

The TikTok-inspired law in the US will extend to any “foreign adversary controlled application” that Mr Biden deems a national security risk.

That could change the operating landscape for Chinese platforms such as Tencent Holdings’ WeChat app or PDD Holdings’ e-commerce marketplace Temu.

While China-originated fast fashion giant Shein is now headquartered in Singapore, it has also faced congressional scrutiny given its vast supply chain networks in China.

Complicating TikTok’s case further is the worry among lawmakers about China’s ability to influence US public opinion. TikTok raised eyebrows in March when it mobilised users to petition against a potential ban, demonstrating its influence on Americans.

“Social media of all kinds, as well as messaging apps and websites, can be and are being used by foreign governments to attempt to influence US public opinion,” said Dr Milton Mueller, a professor specialising in cyber-security policy at Georgia Institute of Technology.

“TikTok is no different from Twitter or Meta or YouTube in this regard.”

Beyond tech apps, US lawmakers have scrutinised data security risks from other Chinese-owned companies.

In February, the Biden administration vowed to invest more than US$20 billion (S$27 billion) in port security, after flagging potential espionage and disruption risks from Shanghai Zhenhua Heavy Industries’ cranes.

Washington has moved to ban cars containing Chinese-produced technologies such as Lidar, a remote-sensing technology, from the likes of Hesai Group, fearing risks to US military sites.

Hesai, the world’s largest supplier of Lidar, has threatened legal action after the US Department of Defence put it on a list of “Chinese Military Companies.”

China’s biggest EV stars such as BYD have little presence in the American market given high US tariffs, but the Biden administration has mulled over restrictions that would prevent Chinese makers from moving cars and components into the US through third countries like Mexico.

Genetic information

Biotech is also under the microscope.

Chinese firms WuXi AppTec and WuXi Biologics have lost a combined US$21 billion in market value as at April 22’s close, after US lawmakers accused Chinese companies of getting genetic information about Americans and sought to ban federal agencies from contracting with them.

Other US legislators want higher tariffs on Chinese drones such as those from SZ DJI Technology, as critics argue that foreign-manufactured vehicles could transfer sensitive data.

The more the US scrutinises China “the more likely it is there will be elements, even whole industries” where Washington deems Beijing to be giving unfair advantages, said Mr Isaac Kardon, a senior fellow for China studies at Carnegie Endowment for International Peace.

China has also been clamping down on overseas access to data such as financial indicators, academic databases and even politicians’ biographies.

Beyond its highly censored internet regime known as the Great Firewall, Beijing has raised the alarm about foreign actors exploiting anything from geographic data – which it says could reveal critical infrastructure and military networks – to key information on food production, genetics and weather.

The Chinese authorities have implemented complex approvals to transfer personal data outside of the country, a widening ban on Apple’s devices in state-owned companies, and restrictions on Tesla’s vehicles in government compounds – even though both Apple and Tesla have fully localised the data they collect in China.

At Beijing’s behest, Apple last week removed foreign platforms such as Meta Platforms’ WhatsApp and Threads from its Chinese app store, although both were already largely inaccessible in the country.

‘Cyber hegemony’

The main fear in the US about TikTok is the sway Beijing holds over its private sector. China’s data security and other laws could be used to compel private companies to hand over data to the authorities, although ByteDance has denied that it would comply with such requests.

ByteDance executives sought unsuccessfully to dispel some of those fears with an initiative dubbed “Project Texas” to silo American user’s data in the US, away from Beijing’s purview, along with a similar blueprint for Europe called “Project Clover.”

In recent months, the Biden administration has taken steps to tackle broader concerns about Beijing’s access to sensitive US data.

The White House signed an executive order in February to prevent large amounts of American’s personal data from being transferred to “countries of concern”, and in the TikTok Bill, another provision was tacked on to target third-party data brokers, barring them from selling Americans’ personal data to adversarial countries like China.

“While the concerns over sensitive data flows to China have been building for some time, TikTok is the big shiny object for Congress to wade into the realm of data security measures,” said Ms Reva Goujon, a director at Rhodium Group.

“The TikTok Bill sets an important precedent for targeting Chinese tech platforms that have successfully penetrated the US market.” BLOOMBERG