| Federal — HIPAA | 45 CFR §§ 164.400-414 | 60 days from discovery | Covered entities and business associates | Notify HHS, affected individuals, and media if 500+ affected in a state |
| Federal — SEC | 17 CFR § 229.106 | 4 business days from materiality determination | Public companies | Disclose material cybersecurity incidents |
| Alabama | Ala. Code § 8-38-1 et seq. | 45 days | Businesses handling personal information | Notice to AG if 1,000+ residents affected |
| Alaska | Alaska Stat. § 45.48.010 et seq. | Most expedient time, no unreasonable delay | Businesses handling personal information | Notice to AG required |
| Arizona | Ariz. Rev. Stat. § 18-552 | 45 days | Businesses handling personal information | Notice to AG if 1,000+ residents affected |
| Arkansas | Ark. Code Ann. § 4-110-101 et seq. | Most expedient time | Businesses handling personal information | No AG notice required |
| California | Cal. Civ. Code § 1798.29, 1798.82 | 72 hours for CCPA regulated entities; expedient time for others | Businesses handling personal information | Notice to AG if 500+ residents affected; most detailed requirements |
| Colorado | Colo. Rev. Stat. § 6-1-716 | 30 days | Businesses handling personal information | Notice to AG within 30 days if 500+ residents affected |
| Connecticut | Conn. Gen. Stat. § 36a-701b | 60 days | Businesses handling personal information | Notice to AG required |
| Delaware | Del. Code Ann. tit. 6 § 12B-101 et seq. | 60 days | Businesses handling personal information | Notice to AG required; credit monitoring required in some cases |
| Florida | Fla. Stat. § 501.171 | 30 days | Covered entities handling personal information | Notice to FL AG within 30 days; 45 days for notice to individuals |
| Georgia | Ga. Code Ann. § 10-1-910 et seq. | Most expedient time | Businesses handling personal information | No specific timeframe; expedient manner |
| Hawaii | Haw. Rev. Stat. § 487N-1 et seq. | Most expedient time | Businesses handling personal information | Notice to AG and consumer reporting agencies required |
| Idaho | Idaho Code § 28-51-104 et seq. | Most expedient time | Businesses handling personal information | Notice to AG if 500+ residents affected |
| Illinois | 815 ILCS 530/1 et seq. | Most expedient time | Businesses handling personal information | Notice to AG required |
| Indiana | Ind. Code § 24-4.9 et seq. | 45 days | Businesses handling personal information | Notice to AG required |
| Iowa | Iowa Code § 715C.1 et seq. | Most expedient time, no more than 45 days | Businesses handling personal information | Notice to AG if 500+ residents affected |
| Kansas | Kan. Stat. Ann. § 50-7a01 et seq. | Most expedient time | Businesses handling personal information | No AG notice required |
| Kentucky | Ky. Rev. Stat. Ann. § 365.732 | Most expedient time | Businesses handling personal information | No AG notice required |
| Louisiana | La. Rev. Stat. Ann. § 51:3071 et seq. | 60 days | Businesses handling personal information | Notice to AG required |
| Maine | Me. Rev. Stat. tit. 10 § 1347 et seq. | Most expedient time, no more than 30 days | Businesses handling personal information | Notice to AG required; consumer reporting agencies if 1,000+ |
| Maryland | Md. Code Ann., Com. Law § 14-3501 et seq. | 45 days | Businesses handling personal information | Notice to AG and consumer reporting agencies required |
| Massachusetts | Mass. Gen. Laws ch. 93H | As expedient as possible, no more than 30 days | Businesses handling personal information | Notice to AG and consumer reporting agencies required; most stringent requirements |
| Michigan | Mich. Comp. Laws § 445.63 et seq. | Most expedient time | Businesses handling personal information | No AG notice required |
| Minnesota | Minn. Stat. § 325E.61 | Most expedient time, no more than 45 days | Businesses handling personal information | Notice to consumer reporting agencies if 500+ affected |
| Mississippi | Miss. Code Ann. § 75-24-29 | 45 days | Businesses handling personal information | No AG notice required |
| Missouri | Mo. Rev. Stat. § 407.1500 | Expedient manner, without unreasonable delay | Businesses handling personal information | No AG notice required; notification required when breach discovered |
| Montana | Mont. Code Ann. § 30-14-1701 et seq. | Most expedient time | Businesses handling personal information | Notice to AG required |
| Nebraska | Neb. Rev. Stat. § 87-801 et seq. | 60 days | Businesses handling personal information | Notice to AG required |
| Nevada | Nev. Rev. Stat. § 603A.010 et seq. | Most expedient time, no more than 30 days | Businesses handling personal information | Notice to AG required; encryption safe harbor applies |
| New Hampshire | N.H. Rev. Stat. Ann. § 359-C:19 et seq. | Most expedient time, no more than 30 days | Businesses handling personal information | Notice to AG required |
| New Jersey | N.J. Stat. Ann. § 56:8-163 et seq. | Most expedient time, no more than 30 days | Businesses handling personal information | Notice to AG required; most comprehensive PII definition |
| New Mexico | N.M. Stat. Ann. § 57-12C-1 et seq. | 45 days | Businesses handling personal information | Notice to AG required if 1,000+ residents affected |
| New York | N.Y. Gen. Bus. Law § 899-aa; SHIELD Act | Most expedient time, no more than 30 days | Businesses handling personal information | Notice to AG, DFS, and consumer reporting agencies required; SHIELD Act expands requirements |
| North Carolina | N.C. Gen. Stat. § 75-65 | Most expedient time, no more than 30 days | Businesses handling personal information | Notice to AG required if 1,000+ residents affected |
| North Dakota | N.D. Cent. Code § 51-30-01 et seq. | Most expedient time, no more than 30 days | Businesses handling personal information | Notice to AG required |
| Ohio | Ohio Rev. Code Ann. § 1347.12 et seq. | 45 days | Businesses handling personal information | Notice to AG required if 1,000+ residents affected; safe harbor for NIST compliance |
| Oklahoma | Okla. Stat. tit. 74 § 3113.1 | Most expedient time | Government agencies only for state law; businesses under common law | Limited scope — primarily applies to state agencies |
| Oregon | Or. Rev. Stat. § 646A.600 et seq. | 45 days | Businesses handling personal information | Notice to AG required; broadest definition of personal information |
| Pennsylvania | 73 Pa. Stat. Ann. § 2301 et seq. | Most expedient time | Businesses handling personal information | No AG notice required |
| Rhode Island | R.I. Gen. Laws § 11-49.3-1 et seq. | 45 days | Businesses handling personal information | Notice to AG required |
| South Carolina | S.C. Code Ann. § 39-1-90 | Most expedient time, no more than 60 days | Businesses handling personal information | Notice to AG required if 1,000+ residents affected; Insurance Data Security Act for insurers |
| South Dakota | S.D. Codified Laws § 22-40-19 et seq. | 60 days | Businesses handling personal information | Notice to AG required if 250+ residents affected |
| Tennessee | Tenn. Code Ann. § 47-18-2107 | 45 days | Businesses handling personal information | No AG notice required |
| Texas | Tex. Bus. & Com. Code § 521.053 | 60 days | Businesses handling personal information | Notice to AG if 250+ residents affected |
| Utah | Utah Code Ann. § 13-44-101 et seq. | 30 days | Businesses handling personal information | Notice to AG required if 500+ residents affected |
| Vermont | Vt. Stat. Ann. tit. 9 § 2430 et seq. | 45 days | Businesses handling personal information | Notice to AG required; one of the strictest laws |
| Virginia | Va. Code Ann. § 18.2-186.6; CDPA | 60 days | Businesses handling personal information | Notice to AG required under CDPA if 100,000+ residents affected |
| Washington | Wash. Rev. Code § 19.255.010 et seq. | 30 days | Businesses handling personal information | Notice to AG required if 500+ residents affected; My Health MY Data Act for health data |
| West Virginia | W. Va. Code § 46A-2A-101 et seq. | Most expedient time | Businesses handling personal information | No AG notice required |
| Wisconsin | Wis. Stat. § 134.98 | Most expedient time, no more than 45 days | Businesses handling personal information | No AG notice required |
| Wyoming | Wyo. Stat. Ann. § 40-12-501 et seq. | 30 days | Businesses handling personal information | Notice to AG required if 500+ residents affected |