Was Mike Brandner Law hit by ransomware?

Mike Brandner Law was listed by the secp0 ransomware operation (United States), and stolen data was published on the group's leak site. Darkfield tracks this disclosure with the original leak post, screenshot and group context.

Who is the secp0 ransomware group?

secp0 is a ransomware operator tracked by Darkfield. See the full operator dossier for its known victims, sectors targeted, IOCs and leak-site infrastructure.

What data was leaked in the Mike Brandner Law breach?

secp0 published data attributed to Mike Brandner Law. Darkfield captured the leak post and a screenshot of the listing.

Ransomware victim disclosure

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Mike Brandner Law

Claimed by Secp0 · listed 5 months ago

Age

since listed · data leaked

Status timeline

ListedApr 14, 2026
Data leakeddate unknown

At a glance

Group: Secp0
Status: Data leaked
Country: United States
Sector: Professional Services
Listed on leak site: Apr 14, 2026

About the victim

AI dossier — public-source company profile

Mike Brandner Law is a law firm operating in the United States. The firm maintains a web presence at mikebrandner.com.

Industry: Legal Services

Attack summary

Severity: critical — Confirmed exfiltration and publication of PII at scale (4,000+ individuals) from a law firm, likely containing sensitive client information, legal documents, and personal data.

The secp0 group claims to have exfiltrated approximately 489 GB of data comprising 459,391 files, including references to more than 4,000 unique individuals. Data has been published.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Client records
Personal information of 4,000+ individuals
Law firm documentation

What the group claims

The total volume of extracted data amounts to approximately 489 GB (459,391 files total). The files contain references to more than 4,000 unique individuals...

Sources

Victim sitemikebrandner.com
Leak posthttp://secponewsxgrlnirowclps2kllzaotaf5w2bsvktdnz4qhjr2jnwvvyd.onion/post/cfa329c3p019f2lo3.html

Source

Indexed 5 months ago

This page surfaces a public ransomware disclosure indexed by Darkfield. Original posts come from the operator's own leak site; we cross-check against ransomware.live, RansomLook and RansomWatch where applicable. Share this URL freely.

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Disclosure context

About secp0

secp0 is a newly emerged ransomware group first observed in March 2025, appearing to be financially motivated based on their operational pattern. Given the extremely limited public documentation and recent emergence, specific details about their country of origin, group affiliations, or operational model remain unknown to security researchers. Based on available incident data, the group has demonstrated capability to compromise technology sector targets within the United States, though their specific attack vectors, toolsets, and extortion methodologies have not been publicly documented by major security firms or law enforcement agencies. No notable high-profile campaigns or significant ransomware payments have been publicly attributed to this group at this time. The group appears to be in early operational stages with minimal public visibility, making comprehensive threat assessment challenging due to limited available intelligence from established cybersecurity organizations. The group has been linked to 6 public disclosures across our corpus. First observed on a leak site on March 14, 2025; most recent post April 29, 2026. The operation is currently inactive.

Timeline of this disclosure

April 14, 2026Mike Brandner Law listed by secp0on the group's public leak site

Other recent disclosures by secp0

secp0 has been linked to 6 public victims on Darkfield. A sample of the most recent:

See the full secp0 dossier →

Sector and geography

This disclosure adds to ransomware activity in the Professional Services sector, which has 17 disclosures indexed across all operators we track. Geographically, Mike Brandner Law is reported in United States, a country with 3,165 ransomware disclosures in our corpus.

If your organisation is affected

A listing by secp0 means Mike Brandner Law appeared on a ransomware extortion site and data attributed to it has been published. If this is your organisation, or a supplier you depend on, the priority is to confirm the intrusion and contain it before the window to act closes.

Engage your incident-response team and preserve forensic evidence before remediating — do not wipe affected systems first.
Force a password reset and revoke active sessions for exposed accounts; rotate any credentials, API keys or certificates that may have been in the stolen data.
Assess regulatory notification duties (GDPR, NIS2, sector regulators) — many carry a 72-hour reporting clock from awareness.
Report the incident to your national CERT, CISA (United States), as required for your jurisdiction.
Monitor for the data appearing on secp0's leak site and across paste and breach channels, and brief downstream partners who may be exposed through you.

How we know this. Darkfield monitors public ransomware leak sites continuously, archiving every new disclosure and the data later released against the victim. Each entry on this page is sourced from the operator's own publication and cross-checked against complementary OSINT feeds (RansomLook, ransomware.live, RansomWatch). We do not collect or host stolen data — only the metadata, timestamps and screenshots needed to make the public disclosure searchable and accountable. Records here are corrected when the original post is edited, retracted, or merged with another disclosure.