Fabio
105 lines
8.4 KiB
Markdown
105 lines
8.4 KiB
Markdown
---
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type: "Bill"
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title: "Civil law: privacy."
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description: "Existing law requires a person or business conducting business in California, or any state or local agency, that owns or licenses computerized data that includes personal information, as defined, to disclose in specified ways, a breach of the security of the system or data, as defined, following discovery or notification of the security breach, to any California resident whose unencrypted personal information was, or is reasonably believed to have been, acquired by an unauthorized person. Existing law requires the disclosure to be made in the most expedient time possible and without unreasonable delay, consistent with the legitimate needs of law enforcement, or any measures necessary to determine the scope of the breach and restore the reasonable integrity of the data system."
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jurisdiction: "us/states/ca"
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legislature: "California Legislature"
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session: "20152016"
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identifier: "AB 964"
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citation: "California AB 964 (20152016)"
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classification: ["bill"]
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subjects: ["Civil law: privacy."]
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status: "enacted"
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primary_sponsors: ["Chau"]
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version_count: 10
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action_count: 32
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vote_count: 8
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first_action: "2015-02-26"
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last_action: "2015-10-06"
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source: "openstates"
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source_identifier: "ocd-bill/069f24b8-3742-4adf-91f9-0751137d5a74"
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source_url: "http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201520160AB964"
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source_hash: "9c7fcdeb511bacc90f13cb5e54ad590f240d015e01c233dd239fb71edf4388e4"
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vintage: "2026-07-01"
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source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
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retrieved_at: "2026-07-06"
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confidence: "reported"
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tags: ["legislation", "bill", "us-ca"]
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---
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# California AB 964 (20152016) — Civil law: privacy.
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Existing law requires a person or business conducting business in California, or any state or local agency, that owns or licenses computerized data that includes personal information, as defined, to disclose in specified ways, a breach of the security of the system or data, as defined, following discovery or notification of the security breach, to any California resident whose unencrypted personal information was, or is reasonably believed to have been, acquired by an unauthorized person. Existing law requires the disclosure to be made in the most expedient time possible and without unreasonable delay, consistent with the legitimate needs of law enforcement, or any measures necessary to determine the scope of the breach and restore the reasonable integrity of the data system.
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## Version chain
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The bill's text revisions, in order — the diff chain from filing to enrollment.
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1. **02/26/15 - Introduced** (filed) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201520160AB964&version=20150AB96499INT)
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2. **03/26/15 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201520160AB964&version=20150AB96498AMD)
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3. **04/23/15 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201520160AB964&version=20150AB96497AMD)
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4. **05/05/15 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201520160AB964&version=20150AB96496AMD)
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5. **05/13/15 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201520160AB964&version=20150AB96495AMD)
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6. **05/28/15 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201520160AB964&version=20150AB96494AMD)
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7. **09/01/15 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201520160AB964&version=20150AB96493AMD)
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8. **10/06/15 - Chaptered** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201520160AB964&version=20150AB96491CHP)
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9. **AB964** (committee substitute) — [source](http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=201520160AB964)
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10. **09/10/15 - Enrolled** (enrolled) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=201520160AB964&version=20150AB96492ENR)
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## Votes
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- Do pass as amended and be re-referred to the Committee on [Appropriations] — **7–1** (pass) · lower
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- 3rd Reading AB964 Chau By Jackson — **27–11** (pass) · upper
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- Do pass. — **11–4** (pass) · lower
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- AB 964 CHAU Assembly Third Reading — **69–7** (pass) · lower
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- Do pass — **5–1** (pass) · upper
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- 3rd Reading AB964 Chau By Jackson Reconsider — **37–0** (pass) · upper
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- 3rd Reading AB964 Chau By Jackson — **26–11** (pass) · upper
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- AB 964 CHAU Concurrence in Senate Amendments — **63–11** (pass) · lower
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## Sponsors
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- Chau — primary (person)
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## Timeline
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The legislative action history — every referral, reading, and vote.
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- **2015-02-26** Read first time. To print. `reading-1`
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- **2015-02-27** From printer. May be heard in committee March 29.
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- **2015-03-26** Referred to Com. on P. & C.P. `referral-committee`
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- **2015-03-26** From committee chair, with author's amendments: Amend, and re-refer to Com. on P. & C.P. Read second time and amended. `reading-2, amendment-introduction, amendment-passage, reading-1`
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- **2015-04-06** Re-referred to Com. on P. & C.P. `referral-committee`
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- **2015-04-20** In committee: Set, first hearing. Hearing canceled at the request of author.
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- **2015-04-23** From committee chair, with author's amendments: Amend, and re-refer to Com. on P. & C.P. Read second time and amended. `reading-2, amendment-introduction, amendment-passage, reading-1`
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- **2015-04-27** Re-referred to Com. on P. & C.P. `referral-committee`
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- **2015-05-04** From committee: Amend, and do pass as amended and re-refer to Com. on APPR. (Ayes 7. Noes 1.) (April 30). `amendment-introduction, committee-passage, amendment-passage`
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- **2015-05-05** Read second time and amended. `amendment-passage, reading-2, reading-1`
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- **2015-05-06** Re-referred to Com. on APPR. `referral-committee`
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- **2015-05-13** From committee chair, with author's amendments: Amend, and re-refer to Com. on APPR. Read second time and amended. `reading-2, amendment-introduction, amendment-passage, reading-1`
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- **2015-05-14** Re-referred to Com. on APPR. `referral-committee`
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- **2015-05-20** From committee: Do pass. (Ayes 11. Noes 4.) (May 20). `committee-passage-favorable, committee-passage`
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- **2015-05-21** Read second time. Ordered to third reading. `reading-2, reading-1`
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- **2015-05-28** Read third time and amended. Ordered to third reading. (Page 1629.) `reading-3, amendment-passage, reading-1`
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- **2015-06-03** Read third time. Passed. Ordered to the Senate. (Ayes 69. Noes 7. Page 1848.) `reading-3, passage, reading-1`
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- **2015-06-03** In Senate. Read first time. To Com. on RLS. for assignment. `reading-1`
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- **2015-06-18** Referred to Com. on JUD. `referral-committee`
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- **2015-07-08** From committee: Do pass. (Ayes 5. Noes 1.) (July 7). `committee-passage-favorable, committee-passage`
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- **2015-07-09** Read second time. Ordered to third reading. `reading-2, reading-1`
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- **2015-09-01** Read third time. Passed. Ordered to the Assembly. (Ayes 26. Noes 11. Page 2330.). `reading-3, passage, reading-1`
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- **2015-09-01** Motion to reconsider made by Senator Jackson.
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- **2015-09-01** Reconsideration granted. (Ayes 37. Noes 0. Page 2332.)
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- **2015-09-01** Read third time and amended. Ordered to second reading. `reading-3, amendment-passage, reading-1`
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- **2015-09-02** Read second time. Ordered to third reading. `reading-2, reading-1`
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- **2015-09-03** Read third time. Passed. Ordered to the Assembly. (Ayes 27. Noes 11. Page 2472.). `reading-3, passage, reading-1`
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- **2015-09-03** In Assembly. Concurrence in Senate amendments pending. May be considered on or after September 5 pursuant to Assembly Rule 77.
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- **2015-09-08** Senate amendments concurred in. To Engrossing and Enrolling. (Ayes 63. Noes 11. Page 2946.). `committee-passage-favorable, amendment-passage`
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- **2015-09-17** Enrolled and presented to the Governor at 11:30 a.m.
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- **2015-10-06** Approved by the Governor. `executive-signature`
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- **2015-10-06** Chaptered by Secretary of State - Chapter 522, Statutes of 2015.
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## Source
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OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/069f24b8-3742-4adf-91f9-0751137d5a74`. Confidence: reported (aggregated from official California legislature records).
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