Was Mike Brandner Law hit by ransomware?

Mike Brandner Law was listed by the secpo 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 secpo ransomware group?

secpo 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?

secpo 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 Secpo · listed 3 months ago

Age

since listed · data leaked

Status timeline

ListedApr 14, 2026
Data leakeddate unknown

At a glance

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

About the victim

AI dossier — public-source company profile

Mike Brandner Law is a United States-based law firm operating in the legal services sector. Based on the victim name, it appears to be a solo or small practice associated with attorney Mike Brandner. No public site content was available to confirm further operational details.

Industry: Legal Services

Attack summary

Severity: critical — Confirmed exfiltration and publication of 489 GB of data from a law firm referencing 4,000+ unique individuals, constituting large-scale PII exposure alongside potentially privileged legal communications, which are highly sensitive regulated data.

The group claims to have exfiltrated approximately 489 GB of data comprising 459,391 files, with references to more than 4,000 unique individuals; data has been published following the attack.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Client legal files
Personally identifiable information (PII) of 4,000+ individuals
Case documents
Potentially privileged attorney-client communications

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

Leak posthttp://secponewsxgrlnirowclps2kllzaotaf5w2bsvktdnz4qhjr2jnwvvyd.onion/post/cfa329c3p019f2lo3.html

Source

Indexed 3 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 secpo

SecPo is a ransomware group that first emerged in April 2026, operating with apparent financial motivations based on their limited documented activity. With only four known victims primarily concentrated in Canada, the group appears to target business services and manufacturing sectors, though their small operational footprint suggests they may be a nascent or highly selective threat actor. Due to the group's recent emergence and limited public documentation, details regarding their country of origin, potential affiliations, or ransomware-as-a-service model remain unclear to security researchers. Their attack methodology, encryption techniques, and specific tools have not been extensively documented by major security firms, likely due to their limited scope of operations and recent timeline of activity. No major campaigns, high-profile victims, or significant law enforcement actions have been publicly reported for this group, which aligns with their apparently small-scale operations. Given their recent emergence in 2026, SecPo's current operational status and long-term capabilities remain to be determined as security researchers continue to monitor their activities. The group has been linked to 5 public disclosures across our corpus. First observed on a leak site on April 14, 2026; most recent post April 29, 2026. The operation is currently active.

Timeline of this disclosure

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

Other recent disclosures by secpo

secpo has been linked to 5 public victims on Darkfield. A sample of the most recent:

See the full secpo dossier →

Sector and geography

This disclosure adds to ransomware activity in the Business Services sector, which has 3,796 disclosures indexed across all operators we track. Geographically, Mike Brandner Law is reported in United States, a country with 11,033 ransomware disclosures in our corpus.

If your organisation is affected

A listing by secpo 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 secpo'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.