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Cybersecurity report

ZeroAccess Botnet Resumes Click-Fraud Activity

Sophos (Secureworks Counter Threat Unit research), January 28, 2015. ZeroAccess resurgence: CTU's observation that the peer-to-peer botnet reactivated on 15 January 2015 and resumed distributing click-fraud templates to systems already compromised before the December 2013 disruption.

Source type
Cybersecurity report
Published
January 28, 2015
Research grade
T2
Used in entries
1

Bibliographic record

Publisher
Sophos (Secureworks Counter Threat Unit research)
Published
January 28, 2015
Source type
Cybersecurity report
Research grade
Source grade T2
Language
English
Official record
Not an official publication
What it supports
ZeroAccess resurgence: CTU's observation that the peer-to-peer botnet reactivated on 15 January 2015 and resumed distributing click-fraud templates to systems already compromised before the December 2013 disruption
Dataset id
src_secureworks_ctu_zeroaccess_resumes_2015

Research notes

  • Authored by the Counter Threat Unit Research Team, originally published by Dell SecureWorks; the research now sits on sophos.com following the Secureworks acquisition.
  • The live Sophos page shows no dateline. published_on (2015-01-28) is taken from the Internet Archive capture of the original Secureworks URL, https://www.secureworks.com/blog/zeroaccess-botnet-resumes-click-fraud-activity-after-six-month-break, which prints 'January 28, 2015'.
  • The on-page H1 is 'ZeroAccess Botnet Resumes Click-Fraud Activity'; the phrase 'After Six-Month Break' survives only in the URL slug and is not part of the headline.

How this source is used

Cited 1 time across 1 record type.

The role on each citation records what the source was relied on for. A primary source establishes the fact, a supporting source corroborates it, technical evidence describes the infrastructure, and a later outcome records what happened afterwards.

Sources were reviewed to a research cutoff of August 23, 2026. Addresses recorded after that date are not reflected here.

Cited by

Later activity

1 citation

Cited for activity recorded after the takedown.