Organization
Hartzer Consulting, LLC
Technical SEO, online reputation management, and internet investigation consulting firm founded by Bill Hartzer, offering internet defamation expert witness and defamation cleanup services through internetdefamationexpert.com.
sameAs: www.hartzer.com/ · dnaccess.com/
“Independent, evidence-based expert witness services for internet defamation matters, plus reputation cleanup and monitoring through Hartzer Consulting.”
Bill Hartzer | Internet Defamation Expert Witness & Investigator - published by Hartzer Consulting, LLC
Person
Bill Hartzer
Internet defamation expert witness and investigator, founder of Hartzer Consulting and DNAccess, with more than 25 years of experience in technical SEO, internet infrastructure, and forensic internet investigations.
sameAs: www.hartzer.com/about/ · www.linkedin.com/in/bhartzer · www.billhartzer.com/
“I've spent more than two decades working with search engines, websites, domain names, web analytics, and internet infrastructure as an SEO and technical consultant, and that background is exactly what internet defamation matters require: someone who understands how content is indexed, cached, archived, shared, and traced back to its source.”
About Bill Hartzer | Internet Defamation Expert - published by Hartzer Consulting, LLC
“I regularly serve as an expert witness in matters involving search engine optimization, search engine marketing, Google Ads and online advertising, web analytics, internet marketing, domain names and domain ownership disputes, and website traffic analysis.”
About Bill Hartzer | Internet Defamation Expert - published by Hartzer Consulting, LLC
Service
Internet Defamation Investigation & Expert Witness Services
Seven core service areas covering platform-specific investigation, anonymous poster identification, damages analysis, and reputation cleanup for internet defamation matters.
“My work sits at the intersection of technical SEO, internet investigations, and expert witness testimony. Each service area reflects a distinct type of engagement I handle regularly.”
Internet Defamation Investigation & Expert Witness Services | Bill Hartzer - published by Hartzer Consulting, LLC
Service
Social Media Defamation
Investigating and documenting defamatory posts, comments, and messages across Facebook, Instagram, X, Reddit, and other social platforms.
“Social media defamation moves faster and disappears more easily than defamation on a traditional website. A post can reach thousands of people within hours, get screenshotted and reshared out of context, and then be deleted by its author.”
Social Media Defamation Investigation | Bill Hartzer - published by Hartzer Consulting, LLC
Service
YouTube & Video Defamation
Video and comment defamation, evidence preservation and authentication, deepfake claims, and livestream and short-form video matters.
“Video defamation raises evidence issues that text-based posts don't. A defamatory video can be re-uploaded under a new title after the original is removed, edited to change context, or generated or manipulated using AI tools.”
YouTube & Video Defamation Investigation | Bill Hartzer - published by Hartzer Consulting, LLC
Service
Anonymous Poster Identification
Technical attribution, John Doe subpoena support, sock-puppet investigations, and cross-platform identity correlation.
“Identification depends on what technical data the platform retains, whether that data can be obtained through legal process, and whether the poster left any correlating signals — a reused username, a distinctive writing style, an image with embedded metadata, or activity on other accounts.”
Anonymous Poster Identification | Bill Hartzer - published by Hartzer Consulting, LLC
Service
Online Review Defamation
False and defamatory reviews on Google, Yelp, Glassdoor, Ripoff Report, and other review and complaint platforms.
“Genuinely negative customer experiences are protected opinion, and businesses have to accept honest criticism. The reviews that matter here are different: reviews from people who were never customers, reviews that state false facts rather than opinions, and reviews left by competitors or coordinated groups.”
Online Review Defamation Investigation | Bill Hartzer - published by Hartzer Consulting, LLC
Service
Online Reputation Management & Defamation Cleanup
Search result cleanup, negative review response, content takedowns, and ongoing reputation monitoring, delivered through Hartzer Consulting.
“Investigation and documentation answer the question of what happened and who's responsible. Reputation cleanup answers a different question: what do we do about it now? These services are available whether or not a matter involves litigation.”
Online Reputation Management & Defamation Cleanup | Hartzer Consulting - published by Hartzer Consulting, LLC
Service
Damages & Reputational Harm Analysis
Quantifying business, personal, and search-visibility harm caused by defamatory content for litigation and settlement.
“Attorneys and businesses frequently know, intuitively, that defamatory content hurt them — but intuition doesn't hold up in litigation or settlement negotiations. Damages analysis requires connecting specific defamatory content to measurable outcomes.”
Damages & Reputational Harm Analysis | Bill Hartzer - published by Hartzer Consulting, LLC
Service
Victim Response Guide
Practical first steps for anyone who believes they're a victim of internet defamation: preserving evidence, documenting a timeline, and what to do before content disappears.
“In my work as an expert witness on social media and internet defamation matters, the single biggest obstacle I run into is not a weak legal claim — it's missing evidence.”
If You Believe You're a Victim of Internet Defamation | Bill Hartzer - published by Hartzer Consulting, LLC
Methodology
Evidence Preservation & Investigation Methodology
A five-step, reproducible methodology for internet defamation investigations — evidence capture, platform and technical analysis, attribution research, impact and damages analysis, and documentation and reporting.
“Full-page screenshots with visible URLs, timestamps, and page context, plus source HTML capture and, where appropriate, third-party archiving tools, done as early as possible.”
Methodology & Evidence | Bill Hartzer - published by Hartzer Consulting, LLC
“An investigation is only as useful as its documentation. Screenshots without timestamps and source URLs, evidence captured after content has already changed, or attribution conclusions that aren't supported by the underlying data all weaken a case.”
Methodology & Evidence | Bill Hartzer - published by Hartzer Consulting, LLC
Taxonomy
Common Internet Defamation Scenarios
A taxonomy of the recurring internet defamation patterns Bill Hartzer is most frequently retained to investigate, including competitor campaigns, anonymous posters, viral content, and review bombing.
“A competitor, former employee, or disgruntled ex-partner posts false reviews, comments, or social media content across multiple platforms in a coordinated way, often from disguised or duplicate accounts.”
Common Internet Defamation Scenarios | Bill Hartzer - published by Hartzer Consulting, LLC
Concept
Defamation (Libel)
A false statement of fact, communicated to a third party, that damages the reputation of a person or business. Internet defamation typically takes the written (libel) form.
sameAs: en.wikipedia.org/wiki/Defamation
“A false statement of fact, communicated to a third party, that damages the reputation of a person or business. Legal standards vary by jurisdiction; consult an attorney for a legal determination.”
Glossary & Resources | Internet Defamation Terms Explained - published by Hartzer Consulting, LLC
Concept
John Doe Subpoena (Doe Subpoena)
A subpoena issued in a lawsuit against an unidentified defendant, used to compel a platform or internet service provider to disclose identifying information about an anonymous poster.
sameAs: en.wikipedia.org/wiki/Doe_subpoena
“A John Doe subpoena is issued in a lawsuit filed against an unidentified defendant, compelling a platform or internet service provider to disclose identifying account information — typically registration data and IP address logs associated with the account or activity in question.”
John Doe Subpoena Technical Support | Bill Hartzer - published by Hartzer Consulting, LLC
Concept
Wayback Machine (Archive.org) (Archive.org, Internet Archive Wayback Machine)
A nonprofit digital archive that periodically crawls and saves snapshots of web pages. Coverage is inconsistent and frequently does not include social media posts or individual reviews.
sameAs: en.wikipedia.org/wiki/Wayback_Machine
“The Wayback Machine only has a snapshot of a specific URL if that exact page happened to be crawled by archive.org's bots at some point — and its crawlers heavily favor major websites and popular pages, not individual social media posts, specific reviews, or personal profile pages.”
Why Defamatory Content Disappears (and the Limits of Archive.org) | Bill Hartzer - published by Hartzer Consulting, LLC
Concept
IP Address
A numerical label assigned to a device on a network, sometimes used with legal process to help attribute anonymous online activity, though it does not by itself identify a specific individual.
sameAs: en.wikipedia.org/wiki/IP_address
“An IP address can narrow down a general geographic area and, with legal process, sometimes lead to an internet service account holder — but it doesn't automatically identify a specific person, especially in a household or office with multiple users, or when a VPN, proxy, or public network is involved.”
IP Address & Technical Attribution Analysis | Bill Hartzer - published by Hartzer Consulting, LLC
Concept
Sock Puppet Account
A fake or secondary online account created to disguise the identity of the person controlling it, often used to post or amplify defamatory content while appearing to be an independent voice.
sameAs: en.wikipedia.org/wiki/Sock_puppet_account
“A sock puppet account is a fake or secondary account created to disguise who is actually posting — sometimes a single person operating several accounts to make a viewpoint look more widely held, sometimes a coordinated group working together.”
Sock Puppet & Fake Account Investigation | Bill Hartzer - published by Hartzer Consulting, LLC
Concept
Review Bombing
A coordinated effort to flood a business with negative reviews in a short period, often unrelated to genuine customer experience.
sameAs: en.wikipedia.org/wiki/Review_bomb
“A business receives a sudden cluster of negative, often fabricated reviews in a short window, sometimes coordinated, sometimes triggered by a single viral post elsewhere.”
Common Internet Defamation Scenarios | Bill Hartzer - published by Hartzer Consulting, LLC
Concept
Google Business Profile (Google My Business)
Google's free business listing product, formerly Google My Business, where customer reviews for local businesses appear directly in Google Search and Google Maps.
sameAs: en.wikipedia.org/wiki/Google_My_Business
“Google Business Profile reviews appear directly in Google Search and Google Maps results, often before a potential customer ever reaches the business's own website.”
Google Review Defamation Investigation | Bill Hartzer - published by Hartzer Consulting, LLC
Concept
Deepfake
Media, typically video or audio, that has been synthetically generated or altered using machine learning to convincingly depict a person saying or doing something they did not.
sameAs: en.wikipedia.org/wiki/Deepfake
“As AI-generated and AI-edited video and audio have become more accessible, it's increasingly common for a defamation matter to include a dispute over whether footage is authentic, selectively edited, or entirely fabricated.”
Deepfake & Manipulated Video Claims | Bill Hartzer - published by Hartzer Consulting, LLC
Concept
Online Reputation Management
The practice of monitoring, influencing, and shaping public perception of an individual or business online, typically through search result management, content strategy, and review response.
sameAs: en.wikipedia.org/wiki/Reputation_management
“Search result cleanup builds and strengthens legitimate, accurate content so it outranks the defamatory content on the same search terms.”
Search Result Cleanup & Suppression | Hartzer Consulting - published by Hartzer Consulting, LLC
Concept
Search Engine Optimization (SEO) (SEO)
The practice of improving a website's visibility in unpaid search engine results, applied here to ethical, policy-compliant search result cleanup and suppression.
sameAs: en.wikipedia.org/wiki/Search_engine_optimization
“Hartzer Consulting builds cleanup strategy on the same principles used in any legitimate SEO campaign: strong on-site content, authoritative backlinks, structured data, and technical optimization — not manipulation tactics that violate search engine guidelines.”
Search Result Cleanup & Suppression | Hartzer Consulting - published by Hartzer Consulting, LLC
Concept
Expert Witness
A person with specialized knowledge, skill, or experience who provides opinion testimony to assist a court, arbitration panel, or jury in understanding evidence beyond common knowledge.
sameAs: en.wikipedia.org/wiki/Expert_witness
“The most common regret I hear from attorneys and clients isn't hiring an expert too early — it's waiting too long, after evidence has already been lost or a preservation opportunity has passed.”
When to Hire an Internet Defamation Expert Witness | Bill Hartzer - published by Hartzer Consulting, LLC