Former Senate staffer admits to doxxing five senators on Wikipedia

The man who edited Wikipedia with several senators’ private phone numbers and addresses has pleaded guilty to computer fraud and other offenses. Jackson Cosko, a former employee of Senator Maggie Hassan (D-NH), was arrested in 2018 on suspicion of doxxing five members of Congress. He’s now admitted to breaking into Sen Hassan’s office after being fired, stealing data that included personal contact information, then posting that information online during Supreme Court Justice Brett Kavanaugh’s confirmation hearing. Cosko worked as a computer system administrator for Sen Hassan, but he was fired in May of 2018. According to a plea agreement, he retaliated by using a key from another employee (who was later fired) to break into his old workplace at least four times, installing keyloggers on computers and using stolen login credentials to download gigabytes of data.