Block Party helps people protect their online presence from being weaponized against them in social engineering attacks, harassment campaigns, and fraud. Our secure, privacy-preserving browser plug-in identifies and remediates first-party data overexposures across 9+ platforms, including Facebook, LinkedIn, and X/Twitter, reducing risk both for individuals and their organizations. We specialize in safeguarding first-party data, as opposed to the third-party data most protection services focus on. Block Party is the only scalable solution for reducing this category of risk across large groups of at-risk individuals.