A sub rosa investigation is covert surveillance of a civil claimant, ordered by an insurance company or defense attorney and carried out by a private investigator, to check whether the person’s reported injuries match how they actually live. The Latin phrase means “under the rose,” an old symbol for secrecy. These investigations show up most often in personal injury, workers’ compensation, and disability cases. If someone has mentioned the term to you, there is a good chance surveillance has already been ordered on you or is being considered.
Why Insurers and Defense Attorneys Order Them
The trigger is almost always a gap between what a claimant reports and what the adjuster or defense lawyer suspects. A workers’ comp claimant describes a debilitating back injury, but the medical records are vague or the claimant declined a recommended surgery. A personal injury plaintiff asks for six figures in damages that the treating physician’s notes do not seem to support. Those discrepancies get a private investigator on the phone.
The investigator’s job is to document what you actually do in daily life. Someone who testified under oath that they cannot lift more than ten pounds, caught on video hauling bags of mulch or playing recreational sports, becomes a serious problem at trial. Surveillance usually runs across several consecutive days rather than a single afternoon, so you cannot later claim the footage caught a rare good day. Timing is strategic too. Surveillance scheduled around a deposition lets the defense compare sworn testimony against documented behavior in close to real time.
What Investigators Actually Do
Physical Surveillance
This is the backbone of the work. An investigator parks near your home or workplace and uses high-resolution cameras to record anything visible from public space: the front yard, a parking lot, a public park. The goal is hours of uninterrupted footage of ordinary activity. Mundane moments matter most. Carrying groceries, bending to pick up a child, walking without the limp you have sworn is constant, all of it gets cataloged.
Social Media Monitoring
Investigators comb through publicly available posts. A Facebook photo at a barbecue, an Instagram story from a hiking trail, a check-in at a gym — anything that contradicts your claimed limitations is fair game. The key phrase is “publicly available.” Viewing posts on an open profile is legal. Creating a fake account to friend-request a private profile is deception, and evidence obtained that way can be challenged as unauthorized access to a computer system.
Public Records and Background Research
Public records searches round out the picture: prior claims, past litigation, criminal history, property records. A claimant with three previous soft-tissue claims from minor car accidents looks very different to a jury than someone with no claims history. This goes to credibility rather than physical ability, and it is often just as damaging.
Drone Surveillance
Some investigators now use drones, particularly for aerial views of residential property. Commercial operators must hold an FAA Remote Pilot Certificate under Part 107, the drone must weigh less than 55 pounds, and the operator must keep it in visual line of sight, generally fly only in daytime, and stay in approved airspace absent authorization from air traffic control.1eCFR. 14 CFR Part 107 – Small Unmanned Aircraft Systems Many states add their own privacy limits on drone use over residential property, especially when the drone peers into windows or behind privacy fences.
What Investigators Cannot Legally Do
Trespass or Enter Private Spaces
All surveillance must be done from a public vantage point. An investigator cannot enter your home, climb your fence, walk into your garage, or stand on your private property. The legal concept of curtilage extends the home’s privacy protections to the area immediately around it: a fenced yard, a porch, an enclosed patio. If something is not visible from a public street or sidewalk, the investigator has no business observing it. Recording through a window with a telephoto lens from a public road sits in a gray area that varies by jurisdiction, but physical entry onto private property is a clear line.
Record Conversations They Are Not Part Of
Federal wiretapping law allows a person to record a conversation they are participating in without telling the other party, which is called one-party consent.2Office of the Law Revision Counsel. 18 USC 2511 – Interception and Disclosure of Wire, Oral, or Electronic Communications Prohibited Roughly a dozen states require all parties to consent. An investigator who records a conversation between two other people, without being part of it and without consent, violates wiretapping laws regardless of the state. Penalties range from civil liability to felony charges.
Attach a GPS Tracker to Your Car
In United States v. Jones, the Supreme Court held that attaching a GPS device to a vehicle to monitor its movements is a search under the Fourth Amendment.3Justia. United States v. Jones, 565 U.S. 400 (2012) That case addressed government conduct, but private investigators placing trackers on vehicles face exposure under state stalking, harassment, and anti-tracking laws. A PI cannot put a tracker on your car without consent or a court order.
Pretext for Financial Records
Under the Gramm-Leach-Bliley Act, it is illegal to make false statements to a financial institution’s employees, deceive a customer of a financial institution, or present forged documents to access someone else’s bank records. The law also prohibits hiring someone else to do the pretexting for you.4Office of the Law Revision Counsel. 15 USC 6821 – Privacy Protection for Customer Information of Financial Institutions
Pull DMV Records for the Wrong Reason
The Driver’s Privacy Protection Act restricts who can obtain personal information from state DMV records. Licensed investigators can access these records, but only for purposes permitted by the statute, such as verifying information in connection with litigation or an insurance investigation. Requesting records outside those categories exposes the investigator to civil liability.5Office of the Law Revision Counsel. 18 USC 2721 – Prohibition on Release and Use of Certain Personal Information From State Motor Vehicle Records
Harass, Confront, or Impersonate Law Enforcement
Following someone so closely that it creates fear, confronting the subject, or impersonating a police officer can trigger criminal harassment or stalking charges. Aggressive surveillance that stops short of trespass can still become actionable as intrusion upon seclusion, a privacy tort that lets the subject sue for damages when someone intentionally invades their private affairs in a way that would be deeply offensive to a reasonable person.
Illegally Obtained Footage Is Not Automatically Excluded
This is where most claimants’ expectations are wrong. The Fourth Amendment’s exclusionary rule — the rule that keeps illegally obtained evidence out of court — applies to the government, not to private parties. The Supreme Court established that in 1921 in Burdeau v. McDowell, holding that the Fourth Amendment’s protection “was not intended to be a limitation upon other than governmental agencies.”6Library of Congress. Burdeau v. McDowell, 256 U.S. 465 (1921)
In practice, if a private investigator trespasses on your property to film you, the footage may still be admissible. The investigator broke the law and can be sued or prosecuted for it, but the video does not automatically get excluded the way it would if a police officer had taken it. One exception matters: if law enforcement directed or participated in the illegal conduct, the investigator becomes an agent of the government and the exclusionary rule applies again.7Office of Justice Programs. Admissibility of Evidence Located in Searches by Private Persons
So do not assume illegal surveillance helps your case. Your attorney can still challenge the evidence on relevance, authentication, and prejudice grounds, and can pursue civil claims against the investigator. But “the PI trespassed, so the video is out” is not the automatic result most people expect.
How the Footage Gets Used Against a Claim
The most common use is impeachment: catching you in a contradiction between sworn testimony and recorded behavior. Testify in a deposition that you cannot bend at the waist, then get played footage of yourself weeding a garden the next morning, and your credibility with the jury is gone. A short clip can do more damage than hours of cross-examination.
Surveillance also changes the math in settlement talks. An insurer sitting on video that contradicts your limitations will use it to justify a lower offer or an outright denial, and plaintiffs’ attorneys often shift toward a reduced settlement rather than let a jury see the clip.
At trial, footage must be authenticated before the jury sees it. The investigator who recorded it typically testifies that the video accurately depicts what they personally observed, with the date and location. The court evaluates the technical integrity of the recording, looking at issues like distortion or misleading playback speed.8U.S. Department of Labor. The Use of Surveillance Videos at the Formal Hearing From the Judges Perspective Without proper authentication, the footage stays out.
When the Defense Must Disclose the Footage
Many claimants assume the defense can ambush them with surveillance video at trial. That is generally not how it works. Federal Rule of Civil Procedure 26 requires parties to disclose documents and tangible things they may use to support their claims or defenses. The rule carves out an exception for materials used “solely for impeachment,” but courts have treated surveillance footage as more than pure impeachment material.9U.S. District Court for the Northern District of Illinois. Rule 26 of the Federal Rules of Civil Procedure
The leading federal standard, from Snead v. American Export-Isbrandtsen Lines, Inc., sets up a practical compromise. The defense can wait to disclose surveillance until after it has deposed the plaintiff about their injuries and limitations, which protects the impeachment value of the video. After that deposition, the defense must answer interrogatories about the footage and produce it if it will be used at trial, all before the final pretrial conference.8U.S. Department of Labor. The Use of Surveillance Videos at the Formal Hearing From the Judges Perspective
Surveillance also implicates the work product doctrine under Rule 26(b)(3), since it was prepared in anticipation of litigation. A claimant can overcome that protection by showing substantial need and the inability to obtain equivalent evidence another way.9U.S. District Court for the Northern District of Illinois. Rule 26 of the Federal Rules of Civil Procedure Concern about tampered or misleading footage is exactly the kind of substantial need courts have found sufficient to compel disclosure.
How to Challenge the Evidence
Demand Full Authentication
The defense cannot just play a video for the jury. The person who recorded it must testify under oath that it accurately represents what happened, including date, time, and location. The court evaluates the technical integrity of the recording — playback speed, whether the video has been spliced or altered, whether it fairly represents the events.8U.S. Department of Labor. The Use of Surveillance Videos at the Formal Hearing From the Judges Perspective If the defense cannot produce the videographer or establish chain of custody, the footage may be excluded on that ground alone.
Attack Selective Editing
Investigators often record dozens of hours and the defense submits a curated highlight reel of physical activity. Courts have held that when the defense offers an excerpt, it must be fair, accurate, and representative of the full surveillance. One court put it directly: motion pictures taken at intervals lose their potency when they show only “snatches of fragments” rather than all of the subject’s activities during the surveillance period.8U.S. Department of Labor. The Use of Surveillance Videos at the Formal Hearing From the Judges Perspective Your attorney can demand the full, unedited footage and use the omitted portions — the hours of you sitting still, resting, or visibly struggling — to supply the context the defense left out.
Explain Good Days and Bad Days
Many injuries are genuinely intermittent. A person with a herniated disc may have terrible days and tolerable ones. A few hours of footage showing you carrying groceries does not erase months of documented medical treatment. The argument that surveillance shows movement without showing the discomfort or pain that follows has judicial support, and treating physicians can testify that the recorded activity is consistent with someone whose symptoms vary rather than proof of fraud.
Discovery Failures
If the defense failed to disclose the existence of surveillance during discovery, or failed to identify the investigator as a witness, the footage may be excluded entirely. At minimum, footage that was not properly disclosed may be limited to impeachment use, which prevents the defense from treating it as substantive evidence of your physical abilities.
If You Are the Subject of One
The single most important step is to be honest about your limitations from the start. Surveillance destroys claims built on exaggeration. It does far less damage to claims built on accurate descriptions of genuine, variable pain.
A few concrete habits help:
- Be consistent. Do not describe your limitations one way to your doctor and another way in a deposition. The defense is specifically looking for contradictions between your testimony and your observed behavior.
- Review your social media. Assume investigators are monitoring every public post. A vacation photo does not automatically sink a claim, but a photo of you doing something you swore you could not do will.
- Do not perform for the camera. If you realize you are being watched, do not exaggerate your symptoms. Suddenly limping or picking up a cane can backfire badly if earlier footage already caught you walking normally.
- Document your bad days. Keep a pain journal. Photograph the heating pad, the ice pack, the days you cannot get out of bed. Your attorney needs this to put the defense’s footage in context.
If surveillance crosses into harassment — repeated close following, attempts to enter your property, confrontations — tell your attorney immediately. Overzealous surveillance can support a civil claim for intrusion upon seclusion, and in some cases the conduct is severe enough to involve law enforcement. More than 40 states license private investigators, and a complaint to the licensing authority can lead to suspension or revocation of the investigator’s ability to work.