Terry “Jiajia” Liu (Credit: Slay News)
A Chinese-born Customs and Border Protection (CBP) supervisor stationed along America’s border with Canada has been arrested after FBI investigators caught him on hidden cameras allegedly tearing apart Homeland Security computers, removing and replacing components, and reconnecting the altered machines to the federal government’s network.
Terry “Jiajia” Liu, 39, of Calais, Maine, was charged with theft and destruction of government property after investigators discovered that dozens of CBP computers at three border facilities had been tampered with.
Liu, who described himself as a native of Guangzhou, China, worked as a CBP supervisor at the Calais Port of Entry, with responsibilities extending to the Ferry Point and Milltown crossings.
Federal CBP officers are required to be U.S. citizens.
Yet the extraordinary case is now raising serious questions about how Liu obtained a sensitive Homeland Security position that allegedly gave him after-hours access to government computers along America’s northern border.
FBI Finds 46 Border Computers Altered
The investigation began after CBP information technology personnel discovered in late 2025 that computers at three Maine border facilities had been modified without authorization.
According to an FBI affidavit, investigators eventually identified 46 affected machines.
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Liu admitted during an FBI interview on September 9 that he had used CBP computer components through Newegg’s trade-in program in exchange for store credit.
He initially told investigators that he was attempting to make the computers “more efficient.”
Liu later offered another explanation, saying he had become frustrated by how long CBP computer repairs were taking.
However, the FBI affidavit states that Liu knew his modifications were actually degrading the computers’ performance.