Tostrud & Temp, S.C. Listed by pear Ransomware Group: Ransomware Claim — What’s Alleged & What To Do
Tostrud & Temp, S.C. was listed by the pear Ransomware Group on June 23, 2026, in a listing claiming internal files were exfiltrated in a ransomware attack. Individuals who may have shared data with the firm should review any notifications and consider protective steps such as monitoring accounts or changing credentials.
Breaking down the breach
The available information indicates that pear listed Tostrud & Temp, S.C. in connection with a ransomware operation in which internal files were reportedly taken. No specific date of the intrusion, volume of data, or confirmation of subsequent publication has been disclosed. The firm has not issued a public statement detailing the event beyond what appears in the group’s listing.
The group behind it: pear
Pear is a ransomware operation that follows the common pattern of encrypting systems and removing copies of files before demanding payment. Such groups typically maintain leak sites where they list organizations they claim to have targeted, using the listings to apply pressure. The appearance of Tostrud & Temp, S.C. on the site constitutes the group’s assertion of involvement; independent verification of the claims or of any data release has not been reported.
Who is Tostrud & Temp, S.C.?
Tostrud & Temp, S.C. operates as a full-service certified public accounting firm serving clients in the La Crosse area. CPA firms routinely receive and store financial records, tax documents, payroll information, and other materials that contain identifying details about individuals and businesses. A compromise at such an organization therefore touches records that are often retained for multiple years and are subject to professional confidentiality standards.
What data was at risk
The listing describes the exfiltration of internal files during the ransomware attack. No inventory of specific file types or data categories has been released. Organizations of this kind commonly hold client names, addresses, Social Security numbers, tax returns, bank details, and payroll data, yet the precise contents of the files taken in this case remain unconfirmed.
Why it matters
Exposure of internal files from an accounting firm can create downstream risks for clients whose records were among those taken, including potential misuse of financial or identity information. For the firm itself, the incident adds operational disruption and the need to address any regulatory or professional obligations that follow a claimed intrusion. Because the number of affected individuals is still unknown, the full extent of those risks cannot yet be measured.
If your data was in this claimed breach
Individuals who are clients of Tostrud & Temp, S.C. should monitor their financial accounts and tax filings for unusual activity. Placing fraud alerts with credit bureaus and reviewing statements regularly are standard first steps. Readers can also run a free exposure scan of their email address against known breach data to check whether their information appears in other publicly referenced incidents.
AICompiled with AI assistance from public sources and published under our editorial standards.
How this breach connects
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Publicly posted by pear — unverified claim, pending independent verification
Breach listings — particularly those originating from ransomware or leak sites — are third-party claims that may be unverified, incomplete, or inaccurate. A listing does not by itself confirm that a breach occurred or that any specific data was exposed. Severity is an automated assessment, not a definitive rating. Verification status is shown where available.
Attributions to threat groups and methods reflect public reporting and, in some cases, unverified claims made by the groups themselves; they may be incomplete or later revised. Recent Breaches and GalaxyWarden are independent and are not affiliated with, and do not endorse, any company or group named on this page. This information is aggregated from public sources for awareness only and is not legal, security, or investment advice.