Cyber Threat Intelligence
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Ransomware Victim Financial Services

ATLAS CPAs & Advisors

Ransomware attack by Silentransomgroup · Disclosed May 6, 2025 · 🇺🇸 United States

atlascpas.com

Date Disclosed
May 6, 2025
2025
Threat Group
Silentransomgroup
146 total victims
Country
🇺🇸 United States
Industry
Financial Services

ThreatAI Analysis

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

About the Silentransomgroup group

a former Conti team Silentransomgroup has listed 145 victims since June 2022.

Incident Analysis

ATLAS CPAs & Advisors was targeted by Silentransomgroup ransomware, one of the most active ransomware groups in our database with 146 confirmed victims globally. The attack was disclosed on May 6, 2025, when ATLAS CPAs & Advisors appeared on the group's dark web leak site.

ATLAS CPAs & Advisors is based in United States , operating in the Financial Services sector. United States ranks #1 globally for ransomware attacks, with 9,534 victims in our 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.

Silentransomgroup typically employs a double extortion model: first exfiltrating sensitive data from the victim's systems, then deploying ransomware to encrypt files. Victims face two simultaneous threats — paying to restore access and paying to prevent publication of stolen data. The group's leak site publishes victim names and exfiltrated data as leverage.

Data source: This incident record is sourced from public ransomware group leak site disclosures aggregated via the ransomware.live API. Disclosure date reflects when the victim was published on the leak site, which may differ from the initial date of compromise. This platform does not publish or link to stolen data. Last data update: Sep 19, 2026 14:00 UTC.

Frequently Asked Questions

Was ATLAS CPAs & Advisors attacked by ransomware?

Yes. ATLAS CPAs & Advisors was listed as a victim of the Silentransomgroup ransomware group on May 6, 2025. 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 ATLAS CPAs & Advisors?

ATLAS CPAs & Advisors was attacked by Silentransomgroup ransomware. Silentransomgroup is one of the most active ransomware groups, having claimed 146 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the ATLAS CPAs & Advisors ransomware attack occur?

The ransomware attack on ATLAS CPAs & Advisors was disclosed on May 6, 2025. 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 ATLAS CPAs & Advisors ransomware attack?

The specific data stolen from ATLAS CPAs & Advisors 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, ATLAS CPAs & Advisors likely held financial records, client data, and transaction histories.

How can organisations protect against Silentransomgroup attacks?

To defend against Silentransomgroup 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.