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

Sector and geography

This disclosure adds to ransomware activity in the Business Services sector, which has 2,640 disclosures indexed across all operators we track. Geographically, Mike Brandner Law is reported in United States, a country with 7,392 ransomware disclosures in our corpus.

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.

Ransomware victim disclosure

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Mike Brandner Law

Claimed by secpo · listed 1 month ago

36d

Age

since listed · data leaked

Status timeline

Listed
Apr 14, 2026
Data leaked

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 1 month 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.