Key takeaways
- A California federal court refused to dismiss claims against private equity firm Bain Capital regarding the PowerSchool data breach.
- The court specifically cited Bain Capital's preinvestment activities when keeping the firm in the lawsuit.
- The ruling adds a new layer to legal precedents concerning when investors can be held liable for the actions or failures of their portfolio companies.
- Private equity firms face increased scrutiny during the due diligence phase, as pre-acquisition conduct may open avenues for direct liability.
The Decision
The court issued its order denying Bain Capital's motion to dismiss in part on March 18, 2026.
A California federal court has denied an attempt by private equity firm Bain Capital to dismiss claims brought against it concerning a data breach at PowerSchool. In a ruling that expands the potential targets for privacy litigation, the court determined that the investment firm must remain a defendant in the ongoing lawsuit.
The litigation stems from a data breach at PowerSchool, an education technology company. While plaintiffs typically sue the direct target of a cyberattack, they also named Bain Capital, an investor in the company. Bain Capital sought to dismiss the claims, arguing that it should not face liability for the data security failures of its portfolio company.
The California federal court rejected this argument. In the decision concerning Powerschool, the court specifically cited Bain Capital's preinvestment activities as a key factor in keeping the firm in the case. By focusing on the actions the private equity firm took before finalizing its investment, the court found sufficient grounds to allow the claims to proceed past the initial pleading stage.
Why It Matters
Holding an investment firm responsible for a portfolio company's operational failures is notoriously difficult. The foundational principle of corporate law limits the liability of shareholders and investors, protecting their broader assets from the specific liabilities of the companies they own.
This ruling represents a notable addition to legal precedents regarding investor liability for portfolio company actions. By anchoring potential liability in preinvestment activities, the court sidesteps the traditional protections of the corporate veil. The reasoning suggests that an investor might generate direct liability through its own conduct during the due diligence and acquisition phase, rather than indirect liability derived merely from its status as an owner.
If an investing entity directly assesses, influences, or dictates a target company's data security posture before acquiring it, plaintiffs can argue that the investor assumed a duty of care. This shifts the focus from how much control the investor exercised after the purchase to what the investor knew and did before the deal closed. The decision provides plaintiffs with a viable legal theory to reach the deeper pockets of private equity backers in privacy litigation.
Who Should Care
For lawyers
Corporate attorneys and privacy counsel advising private equity funds must immediately reassess their due diligence protocols. The traditional approach to cybersecurity due diligence involves identifying risks to adjust the purchase price or require indemnification. However, if preinvestment activities can serve as the basis for direct liability in a subsequent data breach, lawyers must carefully manage how deal teams interact with target companies. Counsel should advise funds on how to document their security reviews and avoid taking actions that could be construed as assuming control over the target's data practices before closing. Defense litigators will also need to prepare for aggressive discovery requests targeting pre-acquisition communications, investment committee memos, and third-party security audits commissioned during the buyout process.
For consumers/parties
Individuals affected by data breaches frequently discover that the company holding their data lacks the financial resources to provide meaningful compensation or fund extensive security overhauls. This ruling opens a potential avenue for affected parties to seek remedies from the wealthy investment firms that back these companies. If consumers can demonstrate that a private equity firm was involved in the data security decisions during the investment phase, they may have a better chance of securing a comprehensive settlement or judgment.
Legal Background
In standard corporate structures, parent companies and investors are shielded from the liabilities of their subsidiaries or portfolio companies. This concept of corporate separateness means that an investor is generally only at risk of losing the capital it injected into the business.
To breach this shield, plaintiffs traditionally attempt to "pierce the corporate veil." This requires proving that the investor exercised complete domination and control over the portfolio company, treating it as a mere alter ego rather than an independent entity. Courts set a very high bar for this legal maneuver, and it rarely succeeds in data breach litigation.
An alternative route for plaintiffs is alleging direct liability. Under this theory, the investor is sued not because it owns the breaching company, but because the investor itself participated in the wrongful conduct. In privacy cases, proving direct liability is challenging because investment firms rarely manage the day-to-day IT infrastructure or data collection practices of their portfolio companies. The legal framework generally assumes that operational decisions regarding cybersecurity remain with the portfolio company's management.
What the Court Did
The California federal court evaluated Bain Capital's motion to dismiss the claims related to the PowerSchool data breach. At the motion to dismiss stage, a court must accept the plaintiffs' factual allegations as true and determine whether those allegations state a plausible claim for relief.
Bain Capital argued for dismissal based on the standard protections afforded to investors. However, the court denied the attempt by Bain Capital to dismiss the claims. The court's decision cited Bain Capital's preinvestment activities as a factor in the case.
Instead of requiring the plaintiffs to prove that Bain Capital controlled PowerSchool's security operations after the acquisition, the court looked at the firm's involvement leading up to the deal. The court determined that the allegations regarding Bain Capital's conduct during the preinvestment phase were sufficient to state a claim. By denying the motion to dismiss, the court ruled that the plaintiffs had presented a legally viable theory and could proceed to gather evidence through the discovery process.
How It May Be Applied
This ruling creates a strategic roadmap for plaintiffs in future data breach class actions involving private equity-backed companies. Litigants will likely draft complaints that specifically target the due diligence phase of corporate buyouts.
During discovery, plaintiffs will seek access to the internal communications of investment firms. They will look for evidence that the firm identified severe data security vulnerabilities during preinvestment activities but chose to proceed with the acquisition without requiring the target company to remediate the flaws. If an investor actively directed the target company to delay security upgrades to save costs before closing, plaintiffs will use that as evidence of direct negligence.
The decision leaves open several questions regarding the exact boundaries of this liability. It remains to be seen what specific types of preinvestment activities are required to trigger a duty of care. Courts will need to determine whether simply conducting a thorough cybersecurity audit is enough to expose an investor to a lawsuit, or if the investor must take affirmative steps to influence the target's security policies.
Comparing Investor Liability Theories
| Legal Theory | Basis for Liability | Difficulty for Plaintiffs | Focus of Evidence |
|---|---|---|---|
| Piercing the Corporate Veil | Complete domination and control over the portfolio company. | Very High | Post-acquisition corporate governance and financial commingling. |
| Direct Liability (Traditional) | Active participation in the specific wrongful conduct. | High | Post-acquisition operational directives and management of IT systems. |
| Direct Liability (Preinvestment) | Conduct and knowledge during the due diligence and acquisition phase. | Moderate | Pre-acquisition audits, deal memos, and security assessments. |
A Closer Look at Preinvestment Risk
When a technology company suffers a data breach, the legal fallout usually centers entirely on that specific company. The investors who fund the business typically remain safely on the sidelines, protected by corporate structures designed to limit their financial exposure. This ruling disrupts that standard expectation. By allowing claims to proceed against an investment firm based on its actions before it even finalized its purchase of the company, the court has signaled that the process of investigating and buying a business carries its own legal risks. If an investment firm looks closely at a target company's data practices and identifies problems, the firm may find itself defending those practices in court if a breach occurs later.
This article is general legal information and commentary about legal developments. It is not legal advice, does not address your specific situation, and is not a substitute for advice from a licensed attorney. Reading this article and contacting us through this website do not create an attorney-client relationship.
Sources & authorities
- In re PowerSchool Customer Data Security Breach Litigation, MDL No. 3149, No. 3:25-md-03149 (S.D. Cal.) (Benitez, J.) — MTD denied in part Mar. 18, 2026 — source
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