Quora: Why is My Information on Zoominfo?

I answered two Quora posts on this question several years ago, and it has become my most read blog.   I updated this post on January 17, 2021 to ensure that it complied with current policies and practices at Zoominfo.

As Zoominfo data collection is opt-out versus opt-in, executives are sometimes concerned about what is being collected and how they can opt-out.


ZoomInfo collects data about U.S. and international businesses and businesspeople.  Information is gathered via

  • Web crawling for firmographic and biographic data
  • Email plug-ins that collect signature information such as name, title, company, direct dial, mobile phone, and email
  • An in-house research team

This information is then available to its customers, who use it primarily for sales, marketing, and executive recruitment. Customer use cases include prospecting lists for B2B email and telemarketing campaigns, data hygiene (i.e., confirming you are still at a company and that your contact information is accurate), and call prep before telemarketing or recruitment calls.

Here is an example of how they provide additional information about you to LinkedIn users via their ReachOut Chrome plug-in:

The ZoomInfo ReachOut Chrome connector provides just-in-time company and executive intelligence from corporate websites and LinkedIn.

The ZoomInfo ReachOut Chrome connector provides just-in-time company and executive intelligence from corporate websites and LinkedIn.  Users can immediately view company firmographics or contact details and then send them to a CRM or Sales Engagement Platform.  Zoominfo is about to formally launch their Engage SEP, which will allow users to set up flows (cadences) of calls, emails, and social engagement steps.

ZoomInfo does not collect any consumer or credit information. Thus, they have no lifestyle data, political affiliations, donations, income estimates, age, family details, credit histories, personal emails, or housing data. They focus strictly on your professional persona.

The one exception to consumer data collection is mobile phone numbers, which straddle the line between consumer and business information.  However, Zoominfo only collects and publishes mobile phone numbers that are used for business purposes, such as those placed on signature blocks or posted on professional event sites.

ZoomInfo’s privacy rules and how to opt-out of their database can be found on their website.


Other blog posts about Zoominfo:

FullContact Cloud-based Enrichment

Contact data vendor FullContact offers a cloud-based contact enrichment service via a single user app, team app, and API.  Contact data includes publicly available contact intelligence such as social networks, headshots, and affinities.  FullContact suppresses personal identifiers such as mobile phones, personal email, and home addresses.  For individuals, FullContact supports a unified contact view across Gmail, Outlook, mobile, and LinkedIn contact networks.  For teams, FullContact offers a shared master address database.

FullContact employs a FullContact ID to tie together global business and consumer identifiers.  Individual profiles include 4,500 affinity/lifestyle tags along with social medial links spanning 120 sites including LinkedIn, Twitter, and Facebook.

FullContact Enrichment may be performed via batch processing or API.
FullContact Enrichment may be performed via batch processing or API.

The team service, priced at $9.99 per user per month (when billed annually), provides team members with a master address book.  Team features include business card scanning, contact unification, public information contact updates, and the sharing of tags and notes across the team.

Individual users have access to a free single user Basic edition limited to 1,000 contacts.  A middle tier Premium Edition synchs contacts for up to five users and 25,000 contacts.  Premium is priced at $8.33 per user per month.

“When it comes to managing contacts, businesses, even more than individuals, face huge challenges today. When contact and relationship data is fragmented across many employees and tools, a business isn’t able to harness the power of their extended relationship network,” said VP of Product Matt Holden. “FullContact for Teams alleviates this headache by getting all team contacts in one place, so people can focus on getting their job done, not fighting their address books.”

FullContact offers both People and Company APIs.  The Person API returns social profiles, profile photos, basic demographics, and social influence.  The Company API call takes company names or domains and returns the Key People (CxO and VP) along with firmographics.  While titles are available, the firm does not support a job function and job level taxonomy.

Developers have access to 250 matches per month during the API testing window.  A Starter package provides 2,500 people and 2,500 company matches for $99 per month with a four cent charge per overage.  The Plus edition supports 15,000 people and 15,000 company matches for $299 per month with a two cent charge for overages.  Pricing is based upon successful matches, not total queries.  Both plans are throttled (300 per minute for Starter and 400 per minute for Plus).  Beyond that, the firm offers custom match quotas and rates along with a batch processing option.

FullContact maintains a Human Research team to assist with projects such as B2B Prospecting, large database match and enrich, influencer marketing, and B2C luxury marketing.

FullContact is US – EU Privacy Shield compliant.

D&B NetProspex B2B Contact File Stolen

A NetProspex breach sample record for journalist Zack Whitaker (originally published by Troy Hunt with permission)
A NetProspex breach sample record for journalist Zack Whitaker (originally published by Troy Hunt with permission)

A 52.5 GB NetProspex file of nearly 34 million US business contacts was recently stolen.  Dun & Bradstreet did not indicate how the MongoDB database was purloined, but indicated it suffered no data breaches and the file was likely stolen from a customer.  “We’ve carefully evaluated the information that was shared with us and it is of a type and in a format that we deliver to customers every day. Based on our analysis, it was not accessed or exposed through a Dun & Bradstreet system,” the firm said in a statement to ZD Net.

The file was believed to be six months old.  While it was built and sold for legitimate sales and marketing purposes and complies with US law, it could be used for spamming and spear phishing.  “It’s an absolute goldmine for phishing because here you have a huge amount of useful information from which to craft attacks,” said Internet security advocate Troy Hunt who publicized the breach. “From this data, you can piece together organizational structures and tailor messaging to create an air of authenticity and that’s something that’s attractive to crooks and nation-state actors alike.”

Content includes business contact information; job titles, functions, and levels; current employer; and employer firmographics including size, industry, location, and D-U-N-S Number.  Their file does not contain personal emails, phones, biographics, or any kind of consumer credit data as Dun & Bradstreet strictly collects B2B company and contact intelligence.  However, the file does contain extensive business and government employee data such as 100,000 Department of Defense and a combined 75,000 Army, Air Force, and VA contacts.

Dun & Bradstreet should evaluate whether retaining titles for military and security agencies is in their best interest (and the country’s).  For example, being able to identify 715 military Intelligence Analysts makes it easy for nefarious parties to spearphish them.  This may be a case where losing the actual job title and simply mapping the title to a job function (e.g. procurement, security, medical, R&D) would make sense.  Another option might be to track only government officials whose name appear in official sites and publications.  As the government publishes bid data through FedBizOpps, procurement contacts would still be available for commercial purposes.

“Whilst you could piece together parts of the data from information already in the public domain, having it aggregated and so easily searchable in this fashion is enormously valuable,” said Hunt. “It also serves as a reminder that we’ve lost control of our privacy; the vast majority of people in the data set would have no idea their information is being sold in this fashion and they certainly don’t have any control over it.”

If you would like to check on whether your personal or business email information have been stolen, Hunt has setup a free site which tracks over 200 stolen databases.  Registration takes about 3 minutes (you need to validate that you are researching your own contact information).  The site will also advise you if your email appears in future breaches.

LeadGnome: EU-US Privacy Shield Certification

LeadGnome -- Mining Email for LeadsAccount Based Intelligence vendor LeadGnome completed the EU-U.S. Privacy Shield certification process with the U.S. Department of Commerce.  The new process ensures that privacy is protected when personal data is transferred from the EU to the US.  The Privacy Shield process was implemented last summer after the previous Safe Harbour regime was invalidated by the European Court of Justice.

LeadGnome’s email reply service mines emails for intelligence such as left the company, out of office, change of position, change of name/email, and unsubscribe requests.  “LeadGnome is unique in its ability to mine the unstructured body of reply emails for account based intelligence.  It was, therefore, important to acquire EU-U.S. Privacy Shield certification to assure our customers of our commitment to the privacy of their data,” said Matt Benati, CEO of LeadGnome.

Because the firm collects emails, titles, and business phones, they did not have to go through the more stringent approval level for firms that store credit, payment, or personal data.  This helped expedite the approval process with the Department of Commerce.  As LeadGnome was already Safe Harbour compliant, the approval process was focused on conforming to changes between the Safe Harbour and Privacy Shield.  LeadGnome worked with the Better Business Bureau as a compliance partner and completed the process in about two months.  Benati believes the process will speed up as the certification backlog clears, but noted that his firm benefited from having Safe Harbour certification.

The LeadGnome platform is integrated with major CRMs and MAPs including Salesforce, HubSpot, Marketo and Oracle Cloud.

“LeadGnome is committed to data privacy and business transparency. We had already employed many of the required best practices, so the certification process was completed significantly ahead of schedule,” said Benati.

Other vendors that are Privacy Shield compliant include Dun & Bradstreet, Avention, Zoominfo, Infogroup, Salesforce, Microsoft, Oracle, SalesLoft, ReachForce, and Outreach.  The US International Trade Administration publishes a list of Privacy Shield compliant firms.

US-EU Privacy Shield

EU LogoThe US and EU finalized a new Privacy Shield agreement to replace the recently invalidated Safe Harbour agreement concerning data privacy.  The new program allows firms to begin self-certifying their compliance as of August 1st.  As part of the agreement, the US Department of Commerce will begin conducting regular compliance reviews.

“We have worked hard with all our partners in Europe and in the US to get this deal right and to have it done as soon as possible,” Andrus Ansip, said vice president for the European Commission’s Digital Single Market initiative. “Data flows between our two continents are essential to our society and economy – we now have a robust framework ensuring these transfers take place in the best and safest conditions.”

The US government will also implement “clear limitations, safeguards and oversight mechanisms” concerning the handling of European data.  Furthermore, The European Commission has assurances that bulk data collection would only be conducted “under specific preconditions and needs to be as targeted and focused as possible.”

A complaint mechanism is in place for Europeans which would be handled by the US Department of Commerce or the US Federal Trade Commission.  Mechanisms also exist for an independent ombudsman where national security questions come into play.

While tech companies applauded the new agreement, European privacy advocates contend the deal still fails to protect European citizens.