• 2 min read
Data brokers can still profile you offline
PCWorld lays out how data brokers assemble detailed profiles from public records, retailers, apps, and social media—even if you browse carefully.
Image: PCWorld
Even careful internet users can end up with home addresses, phone numbers, relatives, past addresses, and income estimates listed online. According to PCWorld, that happens because data brokers build profiles from many legal sources, not from a single breach or obvious mistake.
A data broker is a company that collects personal information from a wide range of places, combines it into consumer profiles, and sells that data to other businesses. PCWorld says those profiles can shape ads, marketing offers, background checks, insurance risk assessments, and voter targeting campaigns.
The key point is that brokers assemble thousands of small data points. On their own, each may look harmless. Together, they can reveal spending habits, interests, relationships, homeownership status, and likely income.
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According to PCWorld, common sources include:
- Public records such as property records, court filings, marriage and divorce records, business registrations, professional licenses, and voter registrations where public
- Retailers and loyalty programs, which can expose what you buy, how often you shop, and how much you spend
- Website cookies and third-party trackers, including pixels and analytics scripts that follow activity across sites
- Mobile apps, especially free apps that collect location, device data, advertising IDs, and usage patterns through SDKs
- Social media, where public profiles, likes, follows, comments, and tagged photos can reveal personal details
- Other commercial sources such as financial institutions, consumer research firms, credit reporting agencies, and data circulating after breaches
PCWorld argues that privacy tools still help, but only up to a point. A VPN can hide your IP address and encrypt traffic, and blocking cookies can reduce cross-site tracking, but neither stops a retailer from logging your purchases or an app from using data you already agreed to share.
You also can’t fully stop data brokers once your information is in circulation. Still, PCWorld says people can reduce exposure by skipping some loyalty programs, limiting app permissions, tightening social privacy settings, disabling an advertising ID when possible, and deleting unused accounts.
For legal remedies, residents covered by laws such as the EU’s GDPR or California’s CCPA may be able to request access, deletion, or opt-outs. Google also allows some personal information to be removed from search results.
For broader cleanup, PCWorld points to paid services including Incogni, DeleteMe, Optery, and Aura. These services submit removal requests to hundreds of brokers and people-search sites, track responses, and keep checking for new listings over time. They cannot erase public records or every trace of a person online, but PCWorld says they can sharply reduce how much personal data is available for sale.
Security Editor
Sophia unpacks the invisible wars happening on our networks. Covering cybersecurity, privacy legislation, and cryptography, she exposes how our data is weaponized and defended. Before joining for(geeks), she spent years as a penetration tester. She's the reason the rest of the team uses physical security keys.
via PCWorld
