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Cyber Threat
CTI Academy Sponsor CTI Academy
Ransomware victim Financial Services

John W. Brooker & Co., CPAs

Listed by Cicada3301 on · organisation based in United States

brooker-cpa.com

Disclosed
Aug 31, 2024
Leak-site listing date
Threat group
Cicada3301
75 victims listed
Country
United States
#1 most targeted
Sector
Financial Services

ThreatAI analysis

Compiled from this incident record and the threat intelligence profile for Cicada3301. Figures and technique mappings are quoted from the source data, not inferred.

About the Cicada3301 group

Cicada3301 is a ransomware-as-a-service group (tracked as Repellent Scorpius by Palo Alto) that emerged in mid-2024 using Rust-based ransomware targeting Windows, Linux, and ESXi systems, suspected to be a successor of BlackCat/ALPHV and running an affiliate program with 20% commissions. Cicada3301 has listed 75 victims since June 2024.

Incident analysis

John W. Brooker & Co., CPAs was listed by Cicada3301 ransomware, a group with 75 victims recorded in this database. The listing appeared on the group's leak site on August 31, 2024.

John W. Brooker & Co., CPAs is based in United States and operates in the Financial Services sector. United States ranks #1 worldwide for ransomware disclosures, with 10,169 victims in this database.

Sector context. Financial sector organisations are targeted for their access to funds, sensitive financial data, and the reputational damage a public breach can cause. Regulatory requirements also increase recovery costs.

Cicada3301 typically follows a double extortion model: data is exfiltrated from the victim's systems before files are encrypted, so the victim faces two demands at once — pay to restore access, and pay to keep stolen data unpublished. The leak site, where this listing appeared, is the lever for the second demand.

Source. Public leak-site disclosures aggregated via the ransomware.live API. The disclosure date is when the listing was published, which can differ from the date of compromise. This site does not publish or link to stolen data. Last updated .

Frequently asked questions

Was John W. Brooker & Co., CPAs attacked by ransomware?

Yes. John W. Brooker & Co., CPAs was listed as a victim of the Cicada3301 ransomware group on August 31, 2024. The organisation is based in United States and operates in the Financial Services sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked John W. Brooker & Co., CPAs?

John W. Brooker & Co., CPAs was attacked by Cicada3301 ransomware. Cicada3301 is one of the most active ransomware groups, having claimed 75 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the John W. Brooker & Co., CPAs ransomware attack occur?

The ransomware attack on John W. Brooker & Co., CPAs was disclosed on August 31, 2024. This date reflects when the victim was published on the threat group's leak site, which may differ from the actual date of initial compromise.

What data was stolen in the John W. Brooker & Co., CPAs ransomware attack?

The specific data stolen from John W. Brooker & Co., CPAs has not been independently verified by this platform. Ransomware groups typically exfiltrate data before encrypting systems and use the threat of publication to pressure victims. As a Financial Services organisation, John W. Brooker & Co., CPAs likely held financial records, client data, and transaction histories.

How can organisations protect against Cicada3301 attacks?

To defend against Cicada3301 and similar threat actors, organisations should: maintain regular offline backups tested for restoration; implement network segmentation to limit lateral movement; deploy multi-factor authentication on all remote access; use endpoint detection and response (EDR) tools; conduct regular phishing and security awareness training; and monitor threat intelligence feeds for indicators of compromise (IOCs) associated with active groups.