If you are asking what information do cybercriminals steal, drop one common assumption first: they do not only want passwords. The most valuable data is often whatever can be turned into money, used to impersonate you, or used to unlock more accounts and financial entrances.［1］［2］［3］

Passwords are only one layer. Names, addresses, ID numbers, email accounts, bank cards, medical insurance details, tax identifiers, and even ordinary-looking combinations of data can be stitched into an identity profile.［1］［2］［3］［4］

Use the digital privacy guide as the wider checklist: it connects this issue to accounts, devices, identifiers, and data-broker exposure.

Key Takeaways

Cybercriminals want data that can be monetized, used for impersonation, or used to open the next door.［1］［2］

Names, addresses, SSNs, bank cards, email accounts, medical information, and tax data are high-value targets.［1］［2］［3］

One field may not be enough on its own, but several fields together can raise the risk sharply.［1］［3］

Stolen credentials are often the start of identity theft and financial loss, not the end.［1］［4］

The best defensive idea is to reduce exposure, protect email and financial accounts, and notice anomalies early.［1］［2］［3］

Why can some data be worth more than a password?

A password usually opens one door. Personal identity data, financial data, and recovery information can be used to charge cards, open new accounts, reset other services, commit identity theft, or socially engineer you and your contacts.［1］［2］［3］

That is why damage after a breach may appear weeks or months later instead of immediately.

The 8 data types attackers target most

1. Account passwords and login credentials

They still matter. If someone gets into email, social media, cloud storage, work systems, or payment tools, many other doors may open.［1］［4］

2. Name, address, phone number, and email

Basic personal information may look harmless, but it forms the base layer of an identity. The FTC and IRS both treat this kind of PII as high-risk data.［1］［3］

3. Social Security numbers and tax identifiers

These are classic high-value targets. The IRS explains that stolen SSNs can lead to tax identity theft and fraudulent refund claims.［3］［4］

4. Card and bank account information

This data is easy to monetize directly. It can support fraudulent charges, transfers, new financial applications, or more complex fraud when combined with identity data.［1］［3］

5. Medical and insurance information

Many people underestimate this category. The FTC notes that medical identity theft can create billing problems and even contaminate medical records.［2］

6. Recovery information and verification channels

Recovery email, phone numbers, and verification-code access are powerful links in account takeover. Once attackers control them, more services can be reset.

7. ID document numbers

Driver's licenses, passports, and similar IDs help attackers pass checks, open accounts, or complete missing profile details. The IRS also lists these as key PII.［3］

8. A package that looks enough like you

The real danger is often not one field. It is a combination such as name, address, date of birth, email, phone number, partial ID data, and one platform account.［1］［3］

Once that package exists, many impersonation attempts no longer need a perfect database.

What usually happens after data is stolen?

Account takeover

Email and social media accounts are common targets. If email is taken, many connected services can fall with it.［4］［5］

Identity theft

The FTC defines identity theft as someone using your personal or financial information without permission. That can involve credit cards, utilities, taxes, medical care, or loans.［1］

Targeted scams and secondary social engineering

When attackers know your name, contact details, platform habits, or partial purchase history, the next scam can feel much more believable.

To understand how that information gets weaponized, read What is social engineering? How scammers get around technical defenses.

What should ordinary people protect first?

Protect email and financial entrances first

They have the highest leverage. Email controls recovery; financial accounts create direct loss.

Expose less and fill in less

Not every website deserves your real phone number, main email, and full address. Segment what you can and avoid giving extra details.

Watch for anomalies instead of waiting for a notice

Unknown bills, credit changes, tax problems, medical record issues, or strange messages to contacts can all be early signs.［1］［2］［4］

Respond properly after a breach

Different breaches create different risks. The IRS notes that not every data breach affects tax accounts, but risk rises when SSNs and financial data are involved.［4］

If you want to reduce exposure systematically, read How to remove personal information from the internet: start with these steps (2026).

My take: the underrated question is not "was data leaked?" but "what can this leaked data combine with?"

People often say, "It was only my email and phone number." For an attacker, that may already be enough to move one step forward when combined with public or socially engineered information.

The practical question is: can this data help someone open the next door?

Summary

Cybercriminals do not only steal passwords. They steal data that can be monetized, used for impersonation, or used to take over more accounts.
SSNs, bank cards, email, medical data, ID numbers, and basic PII are high-risk targets.
One field may not be catastrophic, but several combined fields can be worth more than a password.
The first priorities are email, financial accounts, and reducing personal information exposure.

FAQ

Do cybercriminals always want passwords most?

No. Identity data, financial data, and recovery information can be more valuable in many attacks.［1］［3］

Is it risky if only my name and address leak?

Yes. They may not be enough by themselves, but they are important pieces of an identity profile.［1］［3］

Why is medical information valuable?

It can be used for medical identity theft, insurance fraud, and record contamination.［2］

Why is tax information so sensitive?

Identifiers such as SSNs can be abused for fraudulent tax filings and long-term identity problems.［3］［4］

Does a breach always cause damage right away?

No. Some risks appear later as account problems, credit issues, or targeted scams.

What should I protect first?

Email, financial accounts, your main phone number, and high-value identity data. If they fail, the chain reaction is usually bigger.

Disclaimer

This article is for general digital security education and does not constitute legal, tax, credit repair, or medical dispute advice. Different data breaches and identity theft cases can affect individuals differently.

This guide comes from AethoVPN; VPN routing does not carry out the checks required for what data do hackers steal.

Sources

FTC Consumer Advice, What To Know About Identity Theft: https://consumer.ftc.gov/articles/what-know-about-identity-theft
FTC Consumer Advice, What To Know About Medical Identity Theft: https://consumer.ftc.gov/articles/what-know-about-medical-identity-theft
IRS, Identity protection tips: https://www.irs.gov/identity-theft-fraud-scams/identity-protection-tips
IRS, Data breach information for taxpayers: https://www.irs.gov/identity-theft-fraud-scams/data-breach-information-for-taxpayers
FTC Consumer Advice, How To Recover Your Hacked Email or Social Media Account: https://consumer.ftc.gov/articles/how-recover-your-hacked-email-or-social-media-account

Sources checked 8 May 2026.

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