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.
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ZeroAccess click-fraud reactivationTechnical evidence
Same operators, ZeroAccess botnet disruption