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Updated about 1 month ago

Neil I. Sidi, C.P.A. Data Breach

▼ Key takeaways

•Reports suggest a potential breach involving Neil I. Sidi, C.P.A..
•Discovered on March 17, 2026.
•Possible data exposed: Name, Other Personal Identifier.
•Affects individuals in: Maine, New York.
•Confirmation level: Confirmed by regulators.

Breach confirmed

The Neil I. Sidi, C.P.A. breach is confirmed. If you may be affected, add your details below and we will take it from there.

Detailed summary

On January 29, 2026, Neil I. Sidi, C.P.A. experienced an external system breach due to hacking. The company discovered this breach on February 20, 2026, and reported it to the Attorney General of Maine on March 17, 2026. This incident affected 1,950 individuals in total, including 5 Maine residents.

The compromised data types included names and other personal identifiers. The specific types of personal identifiers involved have not been fully disclosed. The company offered identity theft protection services through Transunion (via Cyberscout), including single-bureau credit monitoring/report/score, fraud assistance, and call center services. It remains unclear if other types of sensitive data common for a CPA firm, such as tax records or Social Security numbers, were also exposed.

Additional details about this data breach may emerge as investigations continue. Notices to affected individuals may also be delayed.

Data possibly involved

Name
Other Personal Identifier

Company Response Timeline

Response Grade

Notified consumers within 30 days of discovery

Breach Occurred

Jan 29, 2026

Company Discovered

Feb 20, 2026

Regulator Notified

Mar 17, 2026

Consumers Notified

Mar 17, 2026

22 days to discover

25 days to notify consumers

Breach Verification Status

Reports Only

Complete

Initial dark web reports of potential breach

Company Confirmed

Complete

Company has acknowledged the breach

Regulator Confirmed

Current

Confirmed by regulatory authorities

Note: Breach verification can take time. Information may evolve as more details become available from companies and regulators.

Case Status:

Investigation Open

We're actively investigating this case and seeking affected individuals.

Were You Affected By This Breach?

If you are a customer or have received a data breach notification, you may submit your information as part of our ongoing investigation. Submitting your information is free and does not obligate you.

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Check Your Risk Level

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Do you use Neil I. Sidi, C.P.A.?

Yes

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What should I do?

Change your passwords

Update passwords for the affected service and any accounts using the same password

Enable two-factor authentication

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Monitor your accounts

Watch for suspicious activity on your financial and online accounts

Watch for phishing attempts

Be cautious of emails or messages claiming to be from the affected company

Consider a credit freeze

Prevent unauthorized access to your credit report

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