
Check First
Open-source investigations and tooling exposing coordinated influence operations and platform manipulation.
- Type
- Research & methodologies org
- Based in
- Helsinki, Finland
- Investigations
- 15
- Platforms tracked
- 6
- Active since
- 2023
- Latest report
- Jul 2026
Topics covered
- Misinformation & Disinformation11
- Election Integrity7
- Ad Transparency & Fraud5
- Algorithmic Harm & Recommender Systems3
- Platform Compliance & Governance2
- Content Moderation1
Watchdog vs. platform
Publicly documented legal proceedings, access disputes, or other platform pushback. Allegations, findings, and outcomes are labelled separately and linked to their sources.
No sourced legal or practical dispute has been documented for Check First yet. Know of one?
Add a sourced caseResearchers
Reports
Full database2026
2 reports- Jul 2026Other
Roska Bridge: pro-Russian IMS exploits decentralised platforms
Uncovered a Russian IMS using the Brid.gy service to auto-cross-post from hundreds of Mastodon accounts to Bluesky, laundering sanctioned RT/Sputnik/Pravda content via decentralised platforms' weak moderation.
Misinformation & DisinformationPlatform Compliance & Governance - Jun 2026TikTokTelegramOther
Noise without effect: anti-Pashinyan disinformation ahead of Armenian elections
Monitoring ahead of Armenian elections found foreign manipulation targeting PM Pashinyan; French TikTok users searching his name saw mostly hostile, partly AI-generated content from Kremlin-, diaspora- and Azerbaijan-linked accounts.
Misinformation & DisinformationElection IntegrityBy Nelly P.
2025
3 reports- Jun 2025TikTokX/TwitterTelegramCross-platformOther
Operation Overload: an AI-fuelled escalation ('Overload 2')
The operation escalated using AI-generated content; Telegram is the central hub (673 channels) while ~11,000 X accounts amplify it. TikTok demoted accounts only after 3M+ views.
Misinformation & DisinformationContent Moderation - Mar 2025X/TwitterTelegramOther
'Pravda' Network: Worldwide Expansion and LLM/Wikipedia Pollution
With DFRLab, showed the Russian 'Pravda' network expanded globally and polluted LLMs and Wikipedia; X's Community Notes failed to address its spread.
Misinformation & Disinformation - Jan 2025Meta
Influence by Design: How Meta Accepted Russian Propaganda Payments Despite Sanctions
With Reset.tech and AI Forensics, revealed Meta ran 8,000+ pro-Russian ads tied to the sanctioned Social Design Agency, earning ~$338,000 between Aug 2023-Oct 2024 despite sanctions.
Misinformation & DisinformationAd Transparency & Fraud
2024
8 reports- Dec 2024Meta
Meta's Role in Romania's 2024 Presidential Election
With Reset Tech and EU DisinfoLab, examined Meta's advertising and its influence on public opinion during Romania's pivotal 2024 presidential vote.
Election IntegrityAd Transparency & FraudMisinformation & DisinformationArt. 26 — Ad labellingArt. 34/35 — Systemic riskBy Luiza Vasiliu and Victor Ilie
- Sept 2024X/TwitterTelegram
Operation Overload: a growing disinformation threat targeting the US election
With Reset Tech, confirmed the operation is Russia-based and had shifted focus to the US election, targeting Kamala Harris.
Misinformation & DisinformationElection IntegrityBy Guillaume K.
- Jul 2024TikTok
The TikTok effect: how the app shaped political discourse in Finnish European elections
Faktabaari/CheckFirst CrossOver report uncovering worrying trends in TikTok's possible impact on the 2024 European elections in Finland.
Election IntegrityAlgorithmic Harm & Recommender Systems - Jun 2024X/TwitterTelegram
Operation Overload: pro-Russian actors flood newsrooms with fake content
Exposed the 'Matryoshka'/Operation Overload campaign flooding 800+ media/fact-checking organisations with content urging them to 'verify' fabricated anti-Ukraine material, diverting fact-checker resources.
Misinformation & DisinformationBy Aleksandra Atanasova, Amaury Lesplingart and Guillaume Kuster
- May 2024Meta
Unchecked Political Ads: Pro-Russian Propaganda on Meta Ahead of EU Elections
Between May 1-27 2024, Meta approved at least 275 pro-Russian propaganda ads (lacking required disclaimers) targeting Italy, Germany, France and Poland, reaching over 3 million accounts.
Misinformation & DisinformationElection IntegrityAd Transparency & FraudArt. 26 — Ad labellingBy Amaury L.
- May 2024TikTokMetaGoogleCross-platform
Confusing Google predictions and unbalanced politics on TikTok and Instagram
CrossOver Finland analysis found politically unbalanced content on TikTok and Instagram alongside confusing Google search predictions ahead of the 2024 elections.
Election IntegrityAlgorithmic Harm & Recommender Systems - Apr 2024TikTokMetaGoogleCross-platform
Mozilla commissions CheckFirst to conduct a stress test of Ad Repositories
First comprehensive report on DSA-strengthened platform ad libraries, finding the ad transparency tools failing to meet their intended purpose.
Ad Transparency & FraudPlatform Compliance & GovernanceArt. 39 — Ad transparencyBy Amaury Lesplingart and Claire Pershan
- Mar 2024YouTube
CheckFirst & Faktabaari: Finnish far-right videos highly recommended by YouTube
First CrossOver Finland report showing significant over-representation of right-wing/far-right voices in YouTube's recommendations during the 2024 Finnish presidential election.
Election IntegrityAlgorithmic Harm & Recommender SystemsArt. 34/35 — Systemic risk
2023
2 reports- Jun 2023Meta
Facebook Hustles: The Hidden Mechanics of a Scam Machinery
A month-long investigation uncovered a large-scale scam operation recruiting victims via 1,500+ Facebook ads and fake media sites impersonating news outlets/creators.
Ad Transparency & FraudMisinformation & DisinformationBy Guillaume K.
- Jan 2023X/Twitter
Why is 'Nazis' regularly trending on Twitter in Belgium?
Analysis showing how Russian official narratives get amplified on Twitter in Belgium whenever 'Nazis' trends, revealing coordinated pushing of pro-Kremlin framing.
Misinformation & DisinformationBy Nelly P.