The Medileaks scandal was a major political scandal that occurred in the United States in 2016, and was a main plot point throughout the fourth season of Veep. The scandal involved the administration of Selina Meyer and their presidential campaign hacking the medical records of a young girl and using child mortality data from the same breach.
On March 24, 2016, President Selina Meyer gave an interview with 'CBS This Morning', and mentioned "the little girl down in Pine Hill, Alabama. She's HIV positive via breast milk." Later that day, people on Reddit connected the dots and found out who this girl is, 8-year-old Jennifer Graham. Only this girls parents and doctor knew.
It is later revealed that someone on the Meyer team was responsible for hacking Graham's medical and social security records. Because finding the culprit would be near-impossible, the Meyer administration start looking for someone to scapegoat, with the first person let-go being Leigh Patterson.
For an "I Care" Families First campaign mailer, someone on the campaign used child mortality data from the same breach that named Jennifer Graham as an HIV victim. After Patterson's departure, the press still continued to demand a head, with Patterson not being senior enough. Dan Egan is fired as a result.
In October 2016, during a Congressional hearing on whether or not President Meyer used lobbyists to kill the Families First Bill, Leigh Patterson revealed that the campaign used child mortality data from the same breach that identified Graham as an HIV victim, which was previously not known to the public. Following the breach, Bill Ericsson was identified as the person responsible, and was arrested on November 10. Ericsson was later released from prison.