---
type: "Bill"
title: "Counterfeiting: computer systems."
description: "Counterfeiting: computer systems."
jurisdiction: "us/states/ca"
legislature: "California Legislature"
session: "19992000"
identifier: "AB 451"
citation: "California AB 451 (19992000)"
classification: ["bill"]
subjects: ["Counterfeiting: computer systems."]
status: "enacted"
primary_sponsors: ["Maddox"]
version_count: 7
action_count: 24
vote_count: 6
first_action: "1999-02-16"
last_action: "1999-08-30"
source: "openstates"
source_identifier: "ocd-bill/0d753754-d61e-49bf-b37e-8545f21ec722"
source_url: "http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=199920000AB451"
source_hash: "2850c3c322504d8849a06a0c1f3d5e848e5e9a31f3bab9342e7fff017d40fdbc"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-ca"]
---

# California AB 451 (19992000) — Counterfeiting: computer systems.

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **02/16/99 - Introduced** (filed) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=199920000AB451&version=19990AB45199INT)
2. **03/24/99 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=199920000AB451&version=19990AB45198AMD)
3. **04/15/99 - Amended Assembly** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=199920000AB451&version=19990AB45197AMD)
4. **06/28/99 - Amended Senate** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=199920000AB451&version=19990AB45196AMD)
5. **08/30/99 - Chaptered** (committee substitute) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=199920000AB451&version=19990AB45194CHP)
6. **AB451** (committee substitute) — [source](http://leginfo.legislature.ca.gov/faces/billNavClient.xhtml?bill_id=199920000AB451)
7. **08/16/99 - Enrolled** (enrolled) — [source](https://leginfo.legislature.ca.gov/faces/billPdf.xhtml?bill_id=199920000AB451&version=19990AB45195ENR)

## Votes

- Do pass. — **pass** (pass) · lower
- Do pass as amended and be re-referred to the Committee on Appropriations. — **pass** (pass) · lower
- AB 451 MADDOX THIRD READING — **pass** (pass) · lower
- Special Consent #20 AB451 Maddox — **pass** (pass) · upper
- Do pass as amended, and re-refer to the Committee on Appropriations. — **pass** (pass) · upper
- AB 451 MADDOX CONCURRENCE — **pass** (pass) · lower

## Sponsors

- Maddox — primary (person)
- Alpert — coauthor (person)
- Polanco — coauthor (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **1999-08-30** Chaptered by Secretary of State - Chapter 254, Statutes of 1999.
- **1999-08-30** Approved by the Governor. `executive-signature`
- **1999-08-19** Enrolled and to the Governor at 10:30 a.m.
- **1999-08-16** Senate amendments concurred in. To enrollment. (Ayes 76. Noes 0. Page 3215.) `committee-passage-favorable, amendment-passage`
- **1999-07-15** In Assembly. Concurrence in Senate amendments pending. May be considered on or after August 13 pursuant to Assembly Rule 77.
- **1999-07-15** Read third time, passed, and to Assembly. (Ayes 40. Noes 0. Page 2304.) `passage, reading-3, reading-1`
- **1999-07-13** Read second time. To third reading. Ordered to Special Consent Calendar. `reading-2, reading-1`
- **1999-07-12** From committee: Be placed on second reading file pursuant to Senate Rule 28.8. `committee-passage`
- **1999-06-28** Read second time, amended, and re-referred to Standing Committee on Appropriations. `amendment-passage, reading-2, reading-1, referral-committee`
- **1999-06-24** From committee: Amend, do pass as amended, and re-refer to Standing Committee on Appropriations (Ayes 5. Noes 0.). `committee-passage, amendment-introduction, amendment-passage, referral-committee`
- **1999-05-26** Referred to Standing Committee on Public Safety. `referral-committee`
- **1999-05-20** In Senate. Read first time. To Standing Committee on Rules for assignment. `reading-1`
- **1999-05-20** Read third time, passed, and to Senate. (Ayes 71. Noes 1. Page 1751.) `passage, reading-3, reading-1`
- **1999-05-17** Read second time. To third reading. `reading-2, reading-1`
- **1999-05-13** From committee: Do pass. (Ayes 21. Noes 0.) (May 12). `committee-passage, committee-passage-favorable`
- **1999-04-22** Re-referred to Standing Committee on Appropriations. `referral-committee`
- **1999-04-15** Read second time and amended. `amendment-passage, reading-2, reading-1`
- **1999-04-14** From committee: Amend, and do pass as amended, and re-refer to Standing Committee on Appropriations (Ayes 6. Noes 0.) (April 6). `committee-passage, amendment-introduction, amendment-passage, referral-committee`
- **1999-03-25** Re-referred to Standing Committee on Public Safety. `referral-committee`
- **1999-03-24** From committee chair, with author's amendments: Amend, and re-refer to Standing Committee on Public Safety Read second time and amended. `amendment-introduction, amendment-passage, reading-2, reading-1, referral-committee`
- **1999-03-23** In committee: Set, first hearing. Hearing canceled at the request of author.
- **1999-03-01** Referred to Standing Committee on Public Safety. `referral-committee`
- **1999-02-17** From printer. May be heard in committee March 19.
- **1999-02-16** Read first time. To print. `reading-1`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/0d753754-d61e-49bf-b37e-8545f21ec722`. Confidence: reported (aggregated from official California legislature records).