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Simda botnet disruption

April 2015, Malware and botnets

Extended pass entry, last reviewed August 21, 2026

What was taken down?

C2 servers were seized or disrupted by participating national authorities in a coordinated action.

See what happened

What happened to the people?

No individual outcomes are recorded against this entry.
Group accounted for: Not applicable

See people and accountability

Did it stay down?

Not established in the public record. No later activity is recorded against this entry.

See what happened afterward

An INTERPOL-coordinated operation with national police and private security firms targeted command-and-control servers of the Simda botnet, which affected systems in more than 190 countries.

Date
April 2015
Target
Simda, botnet
Activity
Malware and botnets
Operational lead
Not established
Partners
INTERPOL, Shadowserver[1]
Jurisdiction
Not established
Outcome
C2 servers were seized or disrupted by participating national authorities in a coordinated action.
Status
Completed
Legal mechanism
Coordinated national judicial/search-and-seizure authority.
Group accounted for
Not applicable

No individual is named against this entry in the cited record. That is a gap in what has been published rather than a finding that nobody was involved.

Group accounted for: Not applicable

The cited record does not say how large the group was or whether everyone involved has been identified.

Reported to affect systems in more than 190 countries.

See the organizations and roles behind this action

Not established in the public record. No later activity is recorded against this entry.

Numbered markers throughout this entry link to the source that supports the claim beside them.

Official sources

  1. [1]
    Simda botnet disruption announcement

    INTERPOL, April 1, 2015, Source grade P2

    Establishes the INTERPOL-coordinated Simda C2 disruption.

    No address recorded for this source. Publisher, title, and date are given so it can be retrieved from the publisher.

Coverage note. Added from deep-research aggregation pass. Not independently re-verified source-by-source to the same standard as the original 38-incident core; source_quality capped at S2/P2 pending a dedicated verification pass.