Stalking is the legal name for a pattern that older law could not see because each individual act looked innocent. A phone call is not a crime. Driving past a house is not a crime. Sending a bouquet is not a crime. But a pattern of phone calls, drive-bys, bouquets, surveillance, and unwanted contact aimed at a specific person, sustained over weeks or months, produces measurable terror, restructured daily routines, lost jobs, and — in a significant fraction of cases — homicide. The collective insight, which took until 1990 to be codified anywhere on earth, was that the harm is in the pattern, not the act, and that the pattern is the leading indicator of intimate-partner femicide.

California passed the first anti-stalking statute in 1990, in direct response to the murder of actress Rebecca Schaeffer by a man who had been pursuing her, and a wave of murders of women in Orange County by ex-partners who had each violated restraining orders without consequence. Every U.S. state had a stalking statute by 1993. The federal Violence Against Women Act of 1994 added interstate stalking provisions. The doctrinal architecture that emerged required (1) a course of conduct — two or more acts — (2) directed at a specific person, (3) that would cause a reasonable person fear, and (4) that did cause the target fear or substantial emotional distress. The statute names a pattern as a crime.

The romantic intersection is central: roughly two-thirds of stalking cases involve former intimate partners. Stalking is, demographically, the continuation of intimate-partner control after the relationship ends. Patricia Tjaden and Nancy Thoennes's National Violence Against Women Survey (1998) established the baseline numbers — about one in six women and one in seventeen men experience stalking at some point — and the strong correlation with prior intimate partnership. Later research by Judith McFarlane and Jacquelyn Campbell established that stalking is one of the strongest pre-homicide indicators: in cases of intimate-partner femicide, about three-quarters of the women were stalked in the year before they were killed. The collective response to this evidence has been uneven: stalking is widely criminalized but rarely prosecuted aggressively, restraining orders are frequently issued but enforcement is patchy, and the gap between statute and protection is where most victims still die.

Digital stalking — sometimes called cyberstalking — multiplies the pattern. The same controlling ex who would once have needed to physically drive past your house can now monitor your social media, geolocate your phone through stalkerware, log your keystrokes, watch your Venmo transactions, see who you tag, contact your employer through LinkedIn, impersonate you on dating apps, doxx your new address, and recruit strangers into the harassment via coordinated raids. The pattern remains the same — sustained, targeted, fear-inducing conduct — but the technical capacity is enormously greater and the perpetrator no longer needs to be physically present. Stalkerware applications, marketed as parental-monitoring or anti-cheating tools, install silently on a target's phone and forward location, messages, and microphone audio to the abuser; the EFF and Coalition Against Stalkerware document hundreds of such products. The collective regulatory response is partial: the FTC took action against Retina-X in 2019, against SpyFone in 2021, and the EU's Digital Services Act creates platform obligations, but the underlying app ecosystem persists.

The doctrinal frontier is fourfold. First, course of conduct definitions written for analog harassment do not easily map onto distributed-network harm: when a stalker posts the target's address to an anonymous forum and 200 strangers send threats, who committed the course of conduct? Second, the reasonable person standard struggles with technical surveillance: a victim may not know she is being tracked, which collapses the "fear" element until she finds the AirTag in her car. Third, jurisdiction fractures: federal interstate stalking applies but state prosecutors rarely use it, and the perpetrator may be in a different country. Fourth, platform liability under Section 230 of the Communications Decency Act largely insulates services from responsibility for hosting stalking-facilitating content or accounts, with carveouts for sex trafficking (FOSTA-SESTA) and proposals for more.

At the collective scale, the work ahead is integration. Stalking law sits at the intersection of criminal law, domestic-violence civil protection orders, employment law (workplace stalking), Title IX (campus stalking), housing law (lease termination rights for stalking victims), immigration law (VAWA visas for non-citizen victims), and platform governance. Carrie Goldberg's victim-rights practice and Danielle Citron's Hate Crimes in Cyberspace document the operational reality: a victim must navigate seven institutions to assemble protection, each with its own intake form and skepticism, while the perpetrator only needs a phone. The doctrine exists. The plumbing connecting it to actual safety does not. That is the next-generation collective task.