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HB 593
Maryland House•Signed by Governor
Summary
HB 593, “Criminal Law - Interference With Critical Infrastructure or a Public Safety Answering Point”, was introduced in the House on Jan 28, 2026 by Rep. Terri Hill (D) with 4 co-sponsors. It last saw action on May 12, 2026: Approved by the Governor - Chapter 521.
Record
Text
HB 593 has 4 co-sponsors and 2 roll calls.
hb593/chaptered.txtWES MOORE, Governor Ch. 521Chapter 521(House Bill 593)AN ACT concerningCriminal Law – Interference With Critical Infrastructure or a Public SafetyAnswering PointFOR the purpose of prohibiting a person from intentionally, willfully, and withoutauthorization committing a certain act with the intent to interrupt or impair thefunctioning of critical infrastructure; prohibiting a person from intentionally,willfully, and without authorization committing a certain act that denies access toan authorized user of or interrupts or impairs the functioning of criticalinfrastructure or a public safety answering point; and generally relating tointerference with critical infrastructure or a public safety answering point.BY repealing and reenacting, with amendments,Article – Criminal LawSection 7–302(a), (c), and (d)Annotated Code of Maryland(2021 Replacement Volume and 2025 Supplement)SECTION 1. BE IT ENACTED BY THE GENERAL ASSEMBLY OF MARYLAND,That the Laws of Maryland read as follows:Article – Criminal Law7–302.(a) (1) In this section the following words have the meanings indicated.(2) “Access” means to instruct, communicate with, store data in, retrieve orintercept data from, or otherwise use the resources of a computer program, computersystem, or computer network.(3) (i) “Aggregate amount” means a direct loss of property or servicesincurred by a victim.(ii) “Aggregate amount” includes:1. the value of any money, property, or service lost, stolen, orrendered unrecoverable by the crime; or2. any actual reasonable expenditure incurred by the victimto verify whether a computer program, computer, computer system, or computer networkwas altered, acquired, damaged, deleted, disrupted, or destroyed by access in violation of–1–Ch. 521 2026 LAWS OF MARYLANDthis section.(4) (i) “Computer” means an electronic, magnetic, optical, organic, orother data processing device or system that performs logical, arithmetic, memory, orstorage functions.(ii) “Computer” includes property, a data storage facility, or acommunications facility that is directly related to or operated with a computer.(iii) “Computer” does not include an automated typewriter, atypesetter, or a portable calculator.(5) “Computer control language” means ordered statements that direct acomputer to perform specific functions.(6) “Computer database” means a representation of information,knowledge, facts, concepts, or instructions that:(i) is intended for use in a computer, computer system, or computernetwork; and(ii) 1. is being prepared or has been prepared in a formalizedmanner; or2. is being produced or has been produced by a computer,computer system, or computer network.(7) “Computer network” means the interconnection of one or morecomputers through:(i) the use of a satellite, microwave, line, or other communicationmedium; and(ii) terminals or a complex consisting of two or more interconnectedcomputers regardless of whether the interconnection is continuously maintained.(8) “Computer program” means an ordered set of instructions orstatements that may interact with related data and, when executed in a computer system,causes a computer to perform specified functions.(9) “Computer services” includes computer time, data processing, andstorage functions.(10) “Computer software” means a computer program, instruction,procedure, or associated document regarding the operation of a computer system.–2–WES MOORE, Governor Ch. 521(11) “Computer system” means one or more connected or unconnectedcomputers, peripheral devices, computer software, data, or computer programs.“CRITICAL INFRASTRUCTURE” MEANS SYSTEMS AND ASSETS,(12)WHETHER PHYSICAL OR VIRTUAL, THAT ARE SO VITAL TO THE STATE, A COUNTY, ORA MUNICIPALITY THAT THE INCAPACITY OR DESTRUCTION OF ONE OR MORECOMPONENTS WOULD HAVE A DEBILITATING IMPACT ON:(I) PUBLIC SECURITY;(II) ECONOMIC SECURITY;(III) PUBLIC HEALTH;(IV) PUBLIC SAFETY;(V) PUBLIC TRANSPORTATION; OR(VI) PUBLIC UTILITIES.(13) “Ransomware” means a computer or data contaminant, encryption, orlock that:(i) is placed or introduced without authorization into a computer, acomputer network, or a computer system; and(ii) restricts access by an authorized person to a computer, computerdata, a computer network, or a computer system in a manner that results in the personresponsible for the placement or introduction of the contaminant, encryption, or lockdemanding payment of money or other consideration to remove the contaminant,encryption, or lock.(c) (1) A person may not intentionally, willfully, and without authorization:(i) access, attempt to access, cause to be accessed, or exceed theperson’s authorized access to all or part of a computer network, computer control language,computer, computer software, computer system, computer service, or computer database;or(ii) copy, attempt to copy, possess, or attempt to possess the contentsof all or part of a computer database accessed in violation of item (i) of this paragraph.(2) A person may not commit an act prohibited by paragraph (1) of thissubsection with the intent to:–3–Ch. 521 2026 LAWS OF MARYLAND(i) cause the malfunction or interrupt the operation of all or any partof a computer, computer network, computer control language, computer software, computersystem, computer service, or computer data; or(ii) alter, damage, or destroy all or any part of data or a computerprogram stored, maintained, or produced by a computer, computer network, computersoftware, computer system, computer service, or computer database.(3) A person may not intentionally, willfully, and without authorization:(i) possess, identify, or attempt to identify a valid access code; or(ii) publicize or distribute a valid access code to an unauthorizedperson.(4) A person may not commit an act prohibited under this subsection withthe intent to interrupt or impair the functioning of:(i) the State government;(ii) a service, device, or system related to the production,transmission, delivery, or storage of electricity or natural gas in the State that is owned,operated, or controlled by a person other than a public service company, as defined in §1–101 of the Public Utilities Article;(iii) a service provided in the State by a public service company, asdefined in § 1–101 of the Public Utilities Article;(iv) a health care facility, as defined in § 18–338.1 of theHealth – General Article; or(v) a public school, as defined in § 1–101 of the Education Article.(5) (i) This paragraph does not apply to a person who has a bona fidescientific, educational, governmental, testing, news, or other similar justification forpossessing ransomware.(ii) A person may not knowingly possess ransomware with the intentto use the ransomware for the purpose of introduction into the computer, computernetwork, or computer system of another person without the authorization of the otherperson.(6) A person may not INTENTIONALLY, WILLFULLY, AND WITHOUTAUTHORIZATION commit an act prohibited under this subsection with the intent tointerrupt or impair the functioning of CRITICAL INFRASTRUCTURE OR a public safetyanswering point, as defined in § 1–301 of the Public Safety Article.–4–WES MOORE, Governor Ch. 521(7) A PERSON MAY NOT INTENTIONALLY, WILLFULLY, AND WITHOUTAUTHORIZATION COMMIT AN ACT PROHIBITED UNDER THIS SUBSECTION THATDENIES ACCESS TO AN AUTHORIZED USER OF OR INTERRUPTS OR IMPAIRS THEFUNCTIONING OF CRITICAL INFRASTRUCTURE OR A PUBLIC SAFETY ANSWERINGPOINT, AS DEFINED IN § 1–301 OF THE PUBLIC SAFETY ARTICLE.(d) (1) A person who violates subsection (c)(1) of this section is guilty of amisdemeanor and on conviction is subject to imprisonment not exceeding 3 years or a finenot exceeding $1,000 or both.(2) A person who violates subsection (c)(2) or (3) of this section:(i) if the aggregate amount of the loss is $10,000 or more, is guiltyof a felony and on conviction is subject to imprisonment not exceeding 10 years or a fine notexceeding $10,000 or both; or(ii) if the aggregate amount of the loss is less than $10,000, is guiltyof a misdemeanor and on conviction is subject to imprisonment not exceeding 5 years or afine not exceeding $5,000 or both.(3) A person who violates subsection (c)(4) of this section:(i) if the aggregate amount of the loss is $10,000 or more, is guiltyof a felony and on conviction is subject to imprisonment not exceeding 10 years or a fine notexceeding $100,000 or both; or(ii) if the aggregate amount of the loss is less than $10,000, is guiltyof a misdemeanor and on conviction is subject to imprisonment not exceeding 5 years or afine not exceeding $25,000 or both.(4) A person who violates subsection (c)(5) of this section is guilty of amisdemeanor and on conviction is subject to imprisonment not exceeding 2 years or a finenot exceeding $5,000 or both.(5) A person who violates subsection (c)(6) of this section is guilty of a felonyand on conviction is subject to imprisonment not exceeding 5 years or a fine not exceeding$25,000 or both.(6) A PERSON WHO VIOLATES SUBSECTION (C)(7) OF THIS SECTION ISGUILTY OF A FELONY AND ON CONVICTION IS SUBJECT TO IMPRISONMENT NOTEXCEEDING 10 YEARS OR A FINE NOT EXCEEDING $50,000 OR BOTH.SECTION 2. AND BE IT FURTHER ENACTED, That this Act shall take effectOctober 1, 2026.–5–Ch. 521 2026 LAWS OF MARYLANDApproved by the Governor, May 12, 2026.–6–
Prohibiting a person from intentionally, willfully, and without authorization committing a certain act with the intent to interrupt or impair the functioning of critical infrastructure; providing that a person convicted of violating the Act is guilty of a felony and is subject to imprisonment of up to 10 years or a fine not to exceed $50,000, or both; etc.
Sponsors
Rep. Terri Hill (D) sponsors HB 593, and 4 members have co-sponsored it.
Committees
HB 593 went before 2 committees: Judiciary and Judicial Proceedings.
History
HB 593 has taken 12 actions since Jan 28, 2026, the latest on May 12, 2026.
| Chamber | Action | |||
|---|---|---|---|---|
May 12, 2026 | House | Approved by the Governor - Chapter 521 | ||
Apr 13, 2026 | Senate | Third Reading Passed (45-0) | ||
Apr 13, 2026 | House | Returned Passed | ||
Apr 8, 2026 | Senate | Favorable Report by Judicial Proceedings | ||
Apr 8, 2026 | Senate | Favorable Adopted Second Reading Passed |
Votes
HB 593 went to 2 roll calls across both chambers, the latest on Apr 13, 2026 at 45–0.
| Chamber | Question | Yea | Nay | |||
|---|---|---|---|---|---|---|
Apr 13, 2026 | Senate | Third Reading Passed | 45 | 0 | ||
Feb 26, 2026 | House | Third Reading Passed | 136 | 0 |
Source: mgaleg.maryland.gov · legiscan.com