Defamation and Online Harassment Laws in Pennsylvania

Defamation in Pennsylvania is a civil claim governed by 42 Pa.C.S. §§ 8341-8345, which courts apply alongside their own decisions. Section 8343 lists what the plaintiff must prove when the issue is raised, including that the statement was defamatory, that the defendant published it, that it was about the plaintiff and understood that way, and that it caused special harm. Under the Uniform Single Publication Act in § 8341, a single publication, such as one edition of a newspaper or one broadcast, supports only one damages claim.

Sources142 Pa.C.S. § 8343 (burden of proof)242 Pa.C.S. § 8341 (Uniform Single Publication Act)3Digital Media Law Project, Pennsylvania Defamation Law

Pennsylvania once had criminal libel statutes, but in Commonwealth v. Armao (1972) the Pennsylvania Supreme Court held that they did not meet federal free speech and free press guarantees. The current Crimes Code (Title 18) contains no libel or defamation offense, so defamation is handled through civil lawsuits.

Sources4Commonwealth v. Armao, 446 Pa. 325 (1972)518 Pa.C.S. (Crimes and Offenses), table of contents

Under 42 Pa.C.S. § 5523(1), an action for libel, slander or invasion of privacy must be started within one year. Under the single publication rule in § 8341, one publication supports only one damages claim, and recovery in that claim covers the harm suffered in all jurisdictions.

Sources642 Pa.C.S. § 5523242 Pa.C.S. § 8341

Related guide: Statute of limitations for defamation in every state

Pennsylvania courts follow the Restatement (Second) of Torts on slander per se. Spoken statements that accuse someone of a crime punishable by imprisonment, or of conduct incompatible with their business, are slander per se, so the plaintiff does not have to prove a specific financial loss but must still prove actual harm, such as damage to reputation or personal humiliation.

Source7Brinich v. Jencka, 757 A.2d 388 (Pa. Super. Ct. 2000)

Related guide: What defamation per se means

The Uniform Public Expression Protection Act, added on July 17, 2024, makes a person immune from civil liability for a claim based on protected public expression, such as speech in a government proceeding or speech on a matter of public concern, when the claim lacks a prima facie case, fails to state a valid claim, or fails as a matter of law; some kinds of claims are excluded. A person found immune is awarded attorney fees and costs, including when the plaintiff drops the case after immunity is raised. The Act's special motion to dismiss applies only from a date set by a later official notice, and a separate, older law awards fees to people who successfully defend lawsuits over their participation in environmental law or regulation.

Sources842 Pa.C.S. § 8340.11 (Uniform Public Expression Protection Act)942 Pa.C.S. § 8340.13 (definitions)1042 Pa.C.S. § 8340.14 (scope and exclusions)1142 Pa.C.S. § 8340.15 (grant of immunity)1242 Pa.C.S. § 8340.16 (pretrial motion)1342 Pa.C.S. § 8340.18 (awards)1427 Pa.C.S. § 770715Reporters Committee for Freedom of the Press, Anti-SLAPP Legal Guide: Pennsylvania

Related guide: Anti-SLAPP laws by state

When the issue is raised, the defendant must prove truth, that the statement was made on a privileged occasion, or that the subject of a comment was a matter of public concern (42 Pa.C.S. § 8343(b)); in libel cases, § 8342 accepts proof that the statement was substantially true, proper for public information and not made maliciously or negligently. Courts also recognize a fair report privilege for substantially accurate reports of government proceedings and records, and an opinion is not libel unless it can reasonably be read as implying undisclosed defamatory facts. Public officials and public figures must prove actual malice, meaning knowledge of falsity or reckless disregard for the truth, while private figures must prove at least negligence.

Sources1642 Pa.C.S. § 8342 (justification a defense)142 Pa.C.S. § 83431742 Pa.C.S. § 834418Baker v. Lafayette College, 516 Pa. 291 (1987)3Digital Media Law Project, Pennsylvania Defamation Law19New York Times Co. v. Sullivan, 376 U.S. 254 (1964)20Gertz v. Robert Welch, Inc., 418 U.S. 323 (1974)

Pennsylvania's stalking law, 18 Pa.C.S. § 2709.1, covers a course of conduct or repeated communications, including by email, the internet or other electronic means, under circumstances showing an intent to make someone reasonably fear bodily injury or to cause them substantial emotional distress. A first offense is generally a first-degree misdemeanor; a repeat offense, or a first offense after certain violent crimes against the same victim, is a third-degree felony.

Source2118 Pa.C.S. § 2709.1

Related guide: Cyberstalking laws explained

Under 18 Pa.C.S. § 2709, it is harassment, when done with intent to harass, annoy or alarm, to send lewd, threatening or obscene messages to or about someone, including electronically, or to communicate repeatedly, anonymously or at extremely inconvenient hours; these forms are third-degree misdemeanors. The same section makes cyber harassment of a child a crime, covering a continuing course of seriously disparaging statements or threats sent electronically or posted on social media. The law does not apply to constitutionally protected activity.

Source2218 Pa.C.S. § 2709

Related guide: Online harassment laws explained

Under 18 Pa.C.S. § 3131, it is a crime to share, with intent to harass, annoy or alarm, a nude or sexual image of a current or former intimate partner, and since a 2024 amendment also an AI-generated or digitally edited sexual image of any person. It is a second-degree misdemeanor, or first-degree if the person shown is a minor, and under 42 Pa.C.S. § 8316.1 a victim can sue, with a court able to award actual damages or $500, whichever is greater, plus attorney fees. Since 2025, 18 Pa.C.S. § 4101.1 also makes it a crime to create and distribute a forged digital likeness of a real person as genuine with intent to defraud or injure.

Sources2318 Pa.C.S. § 31312442 Pa.C.S. § 8316.12518 Pa.C.S. § 4101.1 (digital forgery)