Photos of travellers to US hacked in data breach

US Customs and Border Protection officials said on Monday that photos of travellers had been compromised as part of a "malicious cyber attack," raising concerns over how federal officials' expanding surveillance efforts could imperil Americans' privacy.

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Customs officials said in a statement the images, which included photos of people's faces and licence plates, had been compromised as part of an attack on a federal subcontractor.

The CBP makes extensive use of cameras and video recordings at airports and land border crossings, where images of vehicles are captured. Those images are used as part of a growing agency facial-recognition program designed to track the identity of people entering and exiting the US.

The CBP said airport operations were not affected by the breach, but it declined to say how many people might have had their images stolen.

The agency processes more than a million passengers and pedestrians crossing the US border on an average day, including more than 690,000 incoming land travellers.

A CBP statement said that the agency learnt of the breach on May 31 and that none of the image data had been identified "on the dark web or internet."

But reporters at The Register, a British technology news site, reported late last month that a large haul of breached data from the firm Perceptics was being offered as a free download on the dark web.

The CBP would not say which subcontractor was involved. But a Microsoft Word document of the agency's public statement, sent on Monday to Washington Post reporters, included the name "Perceptics" in the title: CBP Perceptics Public Statement.

Perceptics representatives did not immediately respond to requests for comment.

CBP spokeswoman Jackie Wren said she was "unable to confirm" whether Perceptics was the source of the breach.

The breach raised alarms in Congress, where lawmakers have questioned whether the government's expanded surveillance measures could threaten constitutional rights and expose millions of innocent people to identity theft.

"If the government collects sensitive information about Americans, it is responsible for protecting it - and that's just as true if it contracts with a private company," Senator Ron Wyden said.

"Anyone whose information was compromised should be notified by Customs, and the government needs to explain exactly how it intends to prevent this kind of breach from happening in the future."

The computer servers of Australia’s major political parties have been hit by a cyber-attack with a “sophisticated state actor” suspected to be behind the plot, says the prime minister.

Wyden said the theft of the data should alarm anyone who has advocated for expanded surveillance powers for the government. "These vast troves of Americans' personal information are a ripe target for attackers," he said.

The best way to avoid breaches of sensitive personal data is not to collect and retain it in the first place.

Civil-rights and privacy advocates also called the theft of the information a sign that the government's growing database of identifying imagery had become an alluring target for hackers and cyber criminals.

"This breach comes just as CBP seeks to expand its massive face recognition apparatus and collection of sensitive information from travellers, including licence plate information and social media identifiers," said Neema Singh Guliani, senior legislative counsel at the American Civil Liberties Union.

"This incident further underscores the need to put the brakes on these efforts and for Congress to investigate the agency's data practices. The best way to avoid breaches of sensitive personal data is not to collect and retain it in the first place."

The CBP said copies of "licence plate images and traveller images collected by CBP" had been transferred to the subcontractor's company network, violating the agency's security and privacy rules. The subcontractor's network was then attacked and breached. No CBP systems were compromised, the agency said.

It's unclear whether passport or facial-recognition photos were included in the breach.

Perceptics and other companies offer automated licence-plate-reading devices that federal officials can use to track a vehicle, or its owner, as it travels on public roads.

Immigration agents have used such databases to track down people who may be in the country illegally. Police agencies have also used the data to look for potential criminal suspects.

Perceptics, based in Farragut, Tennessee, has championed its technology as a key part of keeping borders secure. "You want technology that generates data you can trust and delivers it when and where you need it most," a marketing website says.

The company also said recently that it had installed licence-plate readers at 43 US Border Patrol checkpoint lanes across Arizona, California, New Mexico and Texas, saying they offered border guards "superior images with the highest licence plate read rate accuracy in North America."

The federal government, as well as the group of private contractors it works with, has access to a swelling database of people's cars and faces, which it says is necessary to enhance security and enforce border laws.

The FBI has access to more than 640 million photos, including from passports and driver licences, that it can scan with facial-recognition systems while conducting criminal investigations, a representative for the Government Accountability Office told the House Committee on Oversight and Reform at a hearing last week.