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Anonymous Online Defamation: How Do You Unmask an Anonymous User?

Last reviewed: 2026-03-11 (Asia/Jerusalem)
This article provides general information only and does not constitute legal advice. Each situation is unique—consult with a qualified attorney for guidance specific to your circumstances.

One of the most complex issues in online defamation law is anonymous publication — a talkback, forum comment or fake profile. The person harmed knows what was published but not who published it, and without identification it is hard to file a claim. This guide explains the state of Israeli law on unmasking anonymous users, the significant limitation set by the Supreme Court, and the alternative routes available to remove the content and protect one's good name.

1. The Legal Obstacle: the Mor v. Barak ITC Ruling

In the leading ruling LCA 4447/07 Mor v. Barak ITC (2010), the Supreme Court held that, absent explicit statutory authorization, a court lacks the power to order an internet service provider or platform to disclose the identity of an anonymous user who published harmful content. The practical implication: Israel has no general, simple civil mechanism to unmask an anonymous publisher, and this is a real obstacle for those harmed. To date, no legislation comprehensively regulating this has been completed, so one must act via alternative and creative routes.

2. Possible Routes to Uncover Identity

Despite the limitation, routes exist: first, approaching the platform itself (Google, Facebook, the news site) with a removal request — sometimes the platform removes content that violates its terms even without disclosing identity. Second, in serious cases amounting to a criminal offense (e.g., threats, harassment, extortion), a police complaint may lead to an investigation in which identity is lawfully uncovered. Third, sometimes the publisher can be identified from the content itself (identifying details, style, context). Fourth, targeted legal proceedings in certain circumstances. A lawyer will assess which route is realistic in the circumstances.

3. Removing Content When Identity Cannot Be Uncovered

When unmasking is impractical, the focus shifts to removing the content and minimizing harm. With Google, removal requests can be filed (content violating policy, personal information, removal from search results). With social media platforms — reporting a terms-of-use violation. With news sites and forums — approaching the editor/operator, who may bear independent liability for content it hosts once notified. Removing the publication, even without identifying the publisher, protects one's good name and stops further distribution.

4. Liability of the Platform and Site Operator

The question of a site operator's, forum admin's or platform's liability for anonymous content published on it is complex and fact-dependent. Generally, the more a host knows of harmful content and fails to remove it after being notified, the greater its exposure to liability. An orderly, documented approach to the operator demanding removal is an important step — both for actual removal and to establish evidence that the host knew and did not act. Document every approach and response.

Checklist

  • Immediately document the anonymous publication — screenshot with URL, date and time
  • Approach the platform with a removal request for a terms-of-use violation
  • Assess whether the content amounts to a criminal offense — if so, consider a police complaint
  • Look for identifying details within the publication itself
  • Approach the site/forum operator in writing, documented, demanding removal
  • Consult a lawyer on the realistic route in the circumstances

Common Pitfalls

  • Assuming it is easy to compel an ISP to disclose identity — the Mor ruling limits this
  • Wasting time on unmasking attempts instead of focusing on content removal
  • Failing to document the publication before it is deleted
  • An undocumented approach to the site operator — undermines establishing its liability
  • Ignoring the criminal aspect in cases of threats, harassment or extortion

שאלות ותשובות

Can I compel Google/Facebook to reveal who wrote about me?

Under the Mor v. Barak ruling (2010), absent explicit legislation there is no general civil mechanism to compel unmasking of an anonymous user. So the focus is usually on content removal and alternative routes.

If identity can't be uncovered — is there nothing to do?

There is. You can act to remove the content via the platform or site operator, and in serious cases via a criminal complaint. The main goal is to stop the harm.

When does anonymous publication become a criminal matter?

When it includes threats, menacing harassment, extortion or other offenses. In such cases the police are authorized to investigate and uncover identity by lawful means.

Is the forum operator liable for an anonymous defamatory comment?

It depends on circumstances — mainly whether it knew of the content and failed to remove it after notification. A documented removal demand matters both for removal and to establish liability.

Need advice on this topic?

We'd be glad to look into how we can help.

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