Can I file a claim in the O'Brien v. CSC Holdings Data Breach Class Action case?

No. The case is still being litigated — there is no settlement, no claim form, and no payout. It was filed December 5, 2025 in the District Court, N.D. California (No. 3:25-cv-10485).

Who are the attorneys in the O'Brien v. CSC Holdings Data Breach Class Action?

For the plaintiffs: Jeffrey Douglas Kaliel (KalielGold PLLC). From the public court docket.

In litigation — no settlement yetdata breachprivacy

O'Brien v. CSC Holdings Data Breach Class Action

Last verified September 19, 2026Source: courtlistener-litigationHow ClaimWatch verifies cases

Still being litigated: the claims below are allegations, not findings, and there is no settlement, claim form or payout yet.

Where this case stands

In litigation

The case has been filed and is being fought in court. There is no settlement, no claim form and no payout yet; many class actions are dismissed or never certified.

Pending in the District Court, N.D. California (No. 3:25-cv-10485).

December 5, 2025
Case filed

What happened

A proposed class action against CSC Holdings, LLC alleging fraud, apparently concerning unauthorized access to or mishandling of personal information. The case was filed in federal court based on fraud allegations, though specific details regarding the nature of the alleged breach or affected data are not available from the docket metadata.

Do you qualify?

No settlement exists yet, so there is nothing to file and no class definition to check. If the case settles, the settlement will define exactly who qualifies — watch this case and we'll let you know.

How to file

There is no claim to file yet. If this case reaches a settlement, a claim process will open — usually with an official settlement website and a filing deadline.

Common questions

Can I file a claim in the O'Brien v. CSC Holdings Data Breach Class Action case?: No. The case is still being litigated — there is no settlement, no claim form, and no payout. It was filed December 5, 2025 in the District Court, N.D. California (No. 3:25-cv-10485).What a class action lawsuit is →
Who are the attorneys in the O'Brien v. CSC Holdings Data Breach Class Action?: For the plaintiffs: Jeffrey Douglas Kaliel (KalielGold PLLC). From the public court docket.

Who's involved

Plaintiffs

Kellie O'Brien

Defendants

CSC Holdings, LLC

Counsel for plaintiffs

Jeffrey Douglas Kaliel KalielGold PLLC
Represents Kellie O'Brien
13 tracked cases
jkaliel@kalielpllc.com · (202) 615-3948

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From the public court docket, contact details as filed; not an endorsement.

Guides:What is a class action lawsuit?How class membership works Your options as a class member

Summarised from public settlement documents; confirm terms on the official settlement website. ClaimWatch is not a law firm, and filing a claim is free.