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A Diligent Theory Blog

Open Source Training with Henk Van Ess

Henk van Ess has been on my radar for the past few years. He’s a former investigative journalist who’s morphed himself into a social media investigative guru. He’s done work with a bunch of major media outlets and worked as a trainer and contributor to Bellingcat (a group of open source journalist nerds), but these […]

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It’s the end of the decade, a decade that has pretty much coincided with the founding of my business in August 2009 and the start of my blogging career, with our first post being published  in February 2010. Last week, we posted about the most popular blog posts from the decade. This week, I’ve reached […]

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Blogging and social media have been a very important part of expanding our footprint and growing our business. We have been blessed with a strong online following, especially in the PI community. Sharing our experiences and knowledge with our investigative community has become one of our company’s trademarks. With the end of the decade rapidly […]

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Sign up for our newsletter and stay up to date with what Hal Humphreys, from Pursuit Magazine, believes to be one of the absolute best blogs in the investigative industry!

Osmosis 2019 Conference

For the second year in a row, I attended the OSMOSIS Conference for open source intelligence professionals (you can read last years OSMOSIS review here). I go into these conferences with a pretty open mind – people who think they are going to have some life-changing-experience are bound to be disappointed. In part, because everyone […]

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In this post, we are going to discuss how to search court records, specifically relating to civil lawsuits. (If you are interested in reading more about how to conduct a criminal background check like an expert, check out our previous post.) I consider court records one of the most important and underutilized resources in an […]

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“One of the absolute best blogs in the investigative industry.” ~ Hal Humphreys, Pursuit Magazine