When sensitive information leaks, the damage can be devastating. It can lead to a loss of trust, integrity and possibly even reputation. While it’s impossible to prevent leaks, there are steps organizations can take to mitigate them and limit their impact. Leaks can come in many forms: emails forwarded to the wrong recipients, board-level discussions made public or confidential attachments shared on social media. Regardless of the intent, it’s essential to respond quickly and effectively to contain the breach and minimize further impact.
Jenna McLaughlin: In April, 2023, a trove of classified US intelligence documents began circulating online. They allegedly depicted a snapshot of how the government saw the world in late February and early March, including Russian cyber operations, discussions between Ukraine and South Korean officials about private hesitation and a blunt assessment that Russia was losing the war in Ukraine. The documents were posted in a Discord channel, according to an affidavit, and eventually spread through Telegram, 4chan and Twitter. The leak was reportedly the work of an Air National Guard member, Jack Teixeira.
When investigating a document leak, investigators must identify the two key sources: the point of disclosure and the source of the leak. The goal is to preserve and track the chain of custody between these points. Initial fact-finding typically begins by gathering the leaked material, reviewing how it surfaced and identifying the systems, teams or individuals with access to it. This helps investigators establish a timeline of events and identify the most valuable evidence.