Why Hackers Want Your Personal Data (And How They Use It)

Photo Credit: Unsplash / FLY:D

Keypoints

Your personal data has real monetary value on the black market.

Data brokers and cybercriminals both collect and sell your information.
Identity theft is easier than you think – even your phone …


This content originally appeared on DEV Community and was authored by LawsonPeters

Image descriptionPhoto Credit: Unsplash / FLY:D

Keypoints

  • Your personal data has real monetary value on the black market.
  • Data brokers and cybercriminals both collect and sell your information.
  • Identity theft is easier than you think - even your phone number and address can be weaponized.
  • Regulations like GDPR, CCPA, and NDPR exist - but your data is still at risk.
  • Learn how to protect your digital footprint with simple, actionable tips.

"You Are the Product": The Age of Surveillance Capitalism

We’ve all heard the saying, “If you're not paying for the product, you are the product.”

From that “free” weather app to your Facebook likes, data is being harvested every second. But who profits from your digital life?

The answer: Data brokers, advertisers and yes-cybercriminals(ops🌚).

In 2023, a hacker leaked 10 million customers’ personal data from a popular fitness app. Emails, birth dates, and health data were sold on dark web forums for just $0.30 per user.

What’s Your Data Worth on the Dark Web?

Data Type Dark Web Price (Est.)
Credit Card Info $10 - $100
Social Security Number $1 - $5
Medical Records $100 - $1,000
Full ID Bundle (PII) $30 - $100

PII = Personally Identifiable Information (name, DOB, SSN, address, phone, etc.)

These bundles are often called “Fullz” in underground communities.

Who’s Selling You? The Shadowy World of Data Brokers

You might not know their names - Acxiom, CoreLogic, Oracle - but they know yours.

These legal entities compile and sell your digital footprint to advertisers, insurance firms, political campaigns, and sometimes malicious actors.

From my own experience analyzing grounds for most phishing attacks, many threat actors buy targeted email lists from obscure third-party brokers before launching their campaigns.

How Cybercriminals Use Your Info

  1. Phishing & Social Engineering:
    Knowing your birthday, address, and bank can help craft a believable scam.

  2. Credential Stuffing:
    Email - password combos leaked from one site are used to break into others.

  3. Medical Fraud:
    Your health insurance data can be used to get prescription drugs or fake treatment claims.

  4. Synthetic Identity Theft:
    Criminals create a new fake person using parts of real identities - often children’s.

What Laws Exist to Protect You?

Regulation Region Key Focus
GDPR EU Consent transparency, right to be forgotten
CCPA California, USA Right to opt-out of data sale
NDPR Nigeria Consent-based data collection, privacy rights

But laws alone are not enough. You still need to take proactive steps.

8 Steps to Take Back Control

  1. Check if your info has been leaked:
    Use haveibeenpwned.com

  2. Enable 2FA on every major account.

  3. Use a password manager.

  4. Limit personal info on social media.

  5. Unsubscribe from data brokers via services like Optery or DeleteMe.

  6. Review privacy settings on every app.

  7. Use privacy - focused browsers and extensions. (e.g., Brave, DuckDuckGo)

  8. Educate friends and family.

Final Thoughts: You're Not Paranoid, You're Aware.

Being conscious about your data isn't being paranoid - it's being prepared.

As cybercriminals become more sophisticated, protecting your digital identity is no longer optional - it's essential.

Futher reading and resources

FTC: Data Brokers and You

Mozilla: Privacy Not Included Guide

EFF: Surveillance Self-Defense

About the Author

Lawson Peters is a cybersecurity analyst, technical writer, and co-founder of Step+AI, where he advocates for digital literacy and inclusion across Africa. He loves boxing, debugging network attacks, and helping beginners understand cybersecurity without the jargon.

💬 Comments? Questions?
Let’s talk below or hit me up on Twitter @LawsonPetrs


This content originally appeared on DEV Community and was authored by LawsonPeters


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