For 20 years, ISD has delivered field-leading threat detection, analysis and real-world strategies to combat terrorism, extremism and authoritarianism - in all their ideological forms.

Antisemitism

Threats to Jewish communities and weaponised antisemitism are on the rise, driven by extremists, hostile governments and conspiracy theorists.

Combining our best-in-class digital research techniques with in-depth subject matter knowledge of extremist movements, ISD tracks antisemitism at scale and informs policymakers globally. We also build capacity amongst civil society groups through initiatives such as our Coalition to Combat Online Antisemitism (CCOA).

August 26, 2026

Online antisemitism and digital regulation: ISD’s submission to the Australian Royal Commission

This Dispatch contains an excerpt from an ISD expert report submitted to the Australia's Royal Commission on Antisemitism and Social Cohesion.

Antisemitism, Targeted Threats, Hate and Abuse

August 20, 2026

Lexical laundering: The mainstreaming of antisemitic neologisms from 4chan and forums

Antisemitism, Identity-Based Hate and Abuse, Misogyny, Targeted Threats, Hate and Abuse, Tech Accountability and Safety

July 23, 2026

Canadian nationalist group promotes self-proclaimed ‘Bigotfest’ on social media

Anti-Migrant, Antisemitism, Far-Right Extremism, Terrorism and Extremism

July 14, 2026

UFC terror plotters’ motivations raise questions about threat prioritization

Antisemitism, Hybrid Extremism and Nihilistic Violence, Terrorism and Extremism, Threat Analysis and Prevention

July 1, 2026

ISD’s Hannah Rose testifies before the Royal Commission on Antisemitism and Social Cohesion

Antisemitism

May 13, 2026

Building a strategic response to antisemitism in the UK in a changing threat landscape

Antisemitism, Targeted Threats, Hate and Abuse, Tech Legislation and Regulation, Threat Analysis and Prevention

May 5, 2026

Amplifying Antisemitism: How Recommender Algorithms Serve Harmful Content to Children

Antisemitism, Recommender Systems and Algorithms, Tech Accountability and Safety

May 2, 2026

Recommendation systems and the rapid exposure to antisemitism online

Antisemitism, Recommender Systems and Algorithms, Tech Accountability and Safety

April 22, 2026

The impact of the war with Iran on antisemitic discourse

Antisemitism, Targeted Threats, Hate and Abuse, Tech Accountability and Safety

Further Reading

June 17, 2024

Examining antisemitic and anti-Muslim hate speech on Canadian YouTube channels in the aftermath of 7 October

This article summarises the findings of a topic modelling analysis of antisemitic and anti-Muslim hate speech on Canadian YouTube comments in the afte

Anti-Muslim, Antisemitism, Tech Accountability and Safety

June 14, 2024

Narratives of Hate: Post-7 October Antisemitism and Anti-Muslim Hate on Social Media

This report identifies and analyses the surge of both antisemitic and anti-Muslim hate speech in YouTube comments, with the aim of informing interventions and countermeasures.

Anti-Muslim, Antisemitism, Terrorism and Extremism

April 9, 2024

Workshop: Uniting against antisemitism; empowering transatlantic civil society responses across Latin America

In a panel hosted by ISD Digital Research Analyst Oscar Portillo-Mezaemphasised the importance of education in combating antisemitism.

Antisemitism

January 26, 2024

The Fragility of Freedom: Online Holocaust Denial and Distortion

This report, released ahead of Holocaust Memorial Day 2024, explores contemporary challenges of online Holocaust denial and distortion with contributi

Antisemitism, Information Warfare and Online Manipulation

January 21, 2024

Hannah Rose on the connection between antisemitism and the targetting of LGBTQ+ people

ISD Analyst Hannah Rose spoke to the Guardian about the antisemitic, anti-LGBTQ+ ideology behind the October 2022 attack at a Bratislava LGBTQ+ bar.

Anti-LGBTQ+, Antisemitism, Hybrid Extremism and Nihilistic Violence, Terrorism and Extremism

December 20, 2023

Antisemitic riots in Russia: How misinformation spread online fueled violence

Following antisemitic riots in Dagestan, Russia blamed Ukraine & the West for the tension, but ISD analysis of pre-riot messages questions this claim.

Antisemitism, Information Warfare and Online Manipulation, Targeted Threats, Hate and Abuse

December 20, 2023

Islamophobic and antisemitic discourse on social media after the October 7th attacks

Zahed Amanullah will be speaking on Islamophobic and Antisemitic discourse on social media.

Anti-Muslim, Antisemitism

December 15, 2023

Cross-ideological antisemitism and the October 7th attacks

This briefing analyses how different ideological groups united in promoting antisemitic conspiracy theories after Hamas' 7 October attacks in Israel

Antisemitism, Targeted Threats, Hate and Abuse, Terrorism and Extremism

December 7, 2023

GOP presidential candidate validates the ‘Great Replacement’ conspiracy theory on the debate stage

ISD Senior Research Analyst Jared Holt spoke to WIRED about the implications of Vivek Ramaswamy’s reference to the ‘Great Replacement'.

Anti-Migrant, Antisemitism, Far-Right Extremism, Terrorism and Extremism

December 4, 2023

Unpacking antisemitic narratives about the Hamas attack and the Israel-Hamas Conflict within YouTube comments

ISD analysis the types of online antisemitism seen in the wake of the Hamas attack on Israel and the subsequent conflict, in YouTube comments.

Antisemitism, Targeted Threats, Hate and Abuse, Tech Accountability and Safety

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